Reverse Dictionary: CRAZY

ADJECTIVES
1375 — DOTED crazy, foolish; exhibiting mental impairment 
1390 — DOTTLE crazy, lacking sense or judgement; foolish; having one’s mental faculties impaired in old age → chiefly Sc.
1456 — RAMMIST crazy, mad, frantic → Sc.
..16C — MAD AS A BUCK very angry; crazy → colloq.
1508 — QUEER crazy, eccentric 
1515 — TICKLE crazy, easily upset or overthrown, insecure, tottering; delicate, sensitive 
1516 — MAD AS A HARE very crazy, eccentric, mad 
1529 — MAD AS A MARCH HARE very crazy, eccentric, mad 
1536 — DAFT crazy, of unsound mind, insane, mad → chiefly Sc. & N. Eng. dial.
.M16 — ABRAM  crazy, insane → sl.
1586 — FRENZICAL crazy, affected with frenzy; mad; frenzied, raging; wildly enthusiastic; frantic → obs.
1598 — IDLE-HEADED crazy, of little understanding or intellect; silly, foolish → obs.
..17C — MAD AS A WEAVER very crazy → sl.
..E17 — TECHED crazy or slightly crazy 
1610 — CRACKED crazy, insane, mentally unbalanced → colloq.
1612 — OFF THE HOOKS crazy, angry, or vexed; in a state of madness or intense excitement → sl.
1628 — NON COMPOS eccentric, crazy → sl.
1634 — CRACK-BRAINED crazy, eccentric 
..L17 — SHANDY  half-crazy; empty-headed → Eng. dial.
1720 — HITE — HYTE crazy, mad → Sc. & Eng. dial. rare
1724 — HALLOCKIT — HALOKIT crazy, giddy, thoughtless, foolish → Sc.
1758 — SWIVEL-EYED crazy, mad; having a crazed or frenzied appearance → colloq.
1790 — BEJINGOED crazy, out of one’s senses → Eng. dial. obs.
1790 — REE crazy, delirious; rude, wild; unmanageable → Sc. & Eng. dial.
1793 — SHAKE-BRAINED crazy, of unsound mind, crack-brained → obs.
1796 — CRACK-HEADED crazy; impaired in intellect 
..L18 — OFF ONE’S NANNY  crazy, mad → UK sl.
..19C — HIGHTY-TIGHTY slightly crazy → Eng. dial.
..19C — OFF ONE’S COCONUT crazy, insane 
..19C — OFF ONE’S DOT crazy, insane 
..19C — SHORT OF A SHEET crazy; mentally deficient; stupid → sl.
1805 — DOTTY crazy, eccentric → colloq.
1810 — WIGGY crazy, eccentric → sl.
1818 — GARE-BRAINED crazy, harebrained → Sc. & Eng. dial. obs.
1836 — HAIZIE crazy, muddled; weak in understanding → Sc.
1841 — LOONY mildly crazy; extremely erratic → US sl.
1842 — CRAZIED made crazy, distracted → rare
1842 — MAZE crazy, mad, lunatic; uneasy, over-anxious → Eng. dial.
1845 — OFF ONE’S HEAD crazy, insane, demented → sl.
1846 — NUTS crazy, insane, out of one’s senses → Amer. sl.
1847 — ADDLE crazy, unsound → Eng. dial.
.M19 — RAMPACIOUS  crazy, eccentric → sl.
.M19 — APARTMENT TO LET  crazy, unhinged, insane → sl.
.M19 — ATTIC TO LET  crazy, unhinged, insane →  sl.
.M19 — NOT QUITE THERE crazy, eccentric, insane → sl.
.M19 — OFF ONE’S CHOMP  crazy, mad, eccentric, insane → sl.
.M19 — WRONG IN THE UPPER STOREY  crazy, insane, eccentric → sl.
1850 — CRACKY crazy; senseless 
1851 — BALMY — BARMY crazy, eccentric → colloq.
1858 — OFF ONE’S NUT crazy, insane, out of one’s mind → colloq.
1864 — NOT ALL THERE crazy, eccentric, insane → sl.
1866 — OFF crazy; eccentric; abnormal; weird → US sl.
1870 — OFF ONE’S CONK crazy, mad, eccentric, insane; demented → US sl.
1870 — OFF ONE’S KADOOVA crazy, insane → Aust. sl.
1872 — LOONEY — LOONY crazy, eccentric → sl.
1877 — OFF ONE’S CHUMP crazy; demented → US sl.
1879 — BEE-HEADED crazy; eccentric; whimsical 
1880 — CRACKED IN THE FILBERT crazy, slightly or very eccentric or insane → Cockney sl.
1883 — OFF ONE’S DOT crazy, out of one’s mind → colloq.
1884 — DAFFY crazy, daft; mad; silly; amusingly eccentric; foolish → US sl.
1884 — LOCOED crazy, mad, deranged → Amer. dial.
1885 — SHORT OF A SHEET OF BARK slightly crazy; lacking in common sense or intelligence; mentally deficient 
1886 — BAD LUCK TOP END slightly crazy, defective in mental powers → Eng. dial.
1886 — UNSLATED crazy, demented, mentally deranged → Eng. dial.
1887 — LOCO crazy, insane, mentally deranged, out of one’s mind; obsessed → Amer. dial.
1887 — SCREWY crazy, eccentric → sl., orig. US
1888 — BEGIGGED crazy, infatuated; possessed → Amer.
1890 — OFF ONE’S ONION crazy, insane → Aust. sl.
1891 — BALMY IN THE CRUMPET — BARMY IN THE CRUMPET crazy, eccentric, weird → sl.
1891 — OFF ONE’S BASE crazy, insane, confused, muddled, mistaken → US sl.
1892 — MASHUGGAH — MESHUGA — MESHUGAH — MESHUGGA — MESHUGGAH — MESHUGGINER — MISHOOGENA crazy, mad → sl., orig. Jewish-American
1893 — TOUCHED crazy, eccentric → sl.
1894 — COCKEYED crazy 
1894 — OFF ONE’S PANNIKIN crazy, mad → chiefly Aust. sl.
1895 — BUGHOUSE crazy → US sl.
1895 — OFF ONE’S KERBASE slightly crazy → Amer. dial.
1897 — OFF ONE’S ROCKER crazy, demented → sl.
1898 — NUTTY crazy, eccentric → sl.
1898 — NUTTY AS A FRUITCAKE crazy, eccentric → sl.
1899 — DIPPY crazy, demented; foolish, unstable, silly → US sl.
..L19 — BUZZY  crazy, eccentric → sl.
..L19 — DAMP  crazy, foolish, stupid → sl.
..L19 — MENTAL  crazy, insane, out of one’s mind → sl.
..L19 — OFF ONE’S DIP  crazy, mad, eccentric, insane → sl.
..L19 — OFF ONE’S DIPPER  crazy, mad, eccentric, insane → sl.
..L19 — OFF ONE’S DOTTY  crazy, mad, eccentric, insane → sl.
..L19 — OFF ONE’S ROCK  crazy, insane, eccentric, mad → sl.
..L19 — OFF ONE’S TROLLEY  crazy, eccentric  sl.
..L19 — SALVATION ARMY  crazy, mad, eccentric → sl. rhyming sl. for ‘barmy’
..L19 — UP IN THE AIR  crazy → US sl.
..20C — ABLE SUGAR crazy or out of order; haywire → US military sl.
..20C — ALL-OVER CRAZY completely crazy → US sl.
..20C — BAT-HOUSE crazy, mad, insane → sl.
..20C — CRACKPOT crazy, unworkable, fantastic; said of ideas, schemes, etc. → colloq.
..20C — DAD’S ARMY crazy, barmy → Brit. rhyming sl.
..20C — MAD AS A MAGGOT very crazy, extremely eccentric; hence, egregiously foolish → NZ sl.
..20C — MAD AS A MEAT AXE crazy → Aust. sl.
..20C — OFF ONE’S PANNICAN crazy, insane → Aust. sl.
..20C — OFF ONE’S TOP crazy, insane → Aust. sl.
..20C — OFF ONE’S TOP TRAVERSE crazy, mad, insane, eccentric → Aust. sl.
..20C — TWO BRICKS SHORT OF A LOAD crazy, eccentric → sl.
..20C — WIGGING going crazy, stressing → students’ sl.
..E20 — POGGLE — PUGGLE crazy, mentally unbalanced → military sl.
1900 — ABAFT THE WHEEL-HOUSE crazy → sl.
1900 — BARKING MAD absolutely crazy, highly eccentric → sl.
1902 — AFT TO THE WHEEL-HOUSE crazy → sl.
1903 — BATTY crazy, eccentric, odd, insane → US sl.
1903 — BUGS crazy, foolish, silly, demented, insane, mentally deficient → US sl.
1903 — OFFEN ONE’S BOX — OFF ONE’S BOX crazy; foolishly wrong, mistaken → Amer. dial.
1904 — SCRANNY crazy, mad, distracted; simple, foolish; bewildered → Eng. dial. (Bk.)
1904 — UP THE POLE crazy, at one’s wits’ end → colloq.
1905 — ANTIC crazy, odd, eccentric; fantastic → Eng. dial. (Bk.)
1905 — BUGGY crazy, foolish, silly, witless, demented, insane, mentally deficient → Amer. dial.
1905 — HALLOCK crazy → Sc. (Bk.)
1905 — PATE-SORE crazy → Eng. dial. (Bk.)
1906 — CUCKOO crazy, eccentric → sl., orig. US
1906 — NUT crazy, mad, stupid, eccentric → colloq.
1908 — NOODLEY eccentric, crazy → US sl.
1910 — FANTI crazy, insane → sl.
1910 — MAGNOON — MAGNUNE crazy, eccentric → Aust. & NZ sl.
1910 — NERTS — NERTZ crazy, foolish → US sl.
1910 — OFF ONE’S BLOCK crazy, insane → sl., orig. military usage
1910 — OFF ONE’S ROCKET crazy, eccentric, mad → sl.
1910 — TAPPED crazy, insane → sl.
1911 — BATS crazy, very eccentric, mad to any degree → UK sl.
1911 — DINGBATS crazy, eccentric → Aust. & NZ sl.
1911 — DINGBATTY half crazy, imbecile → Amer. dial.
1911 — DINGY crazy, foolish, silly, witless; confused, mixed up → Amer. dial.
1911 — NUTSY odd, crazy, eccentric → sl., orig. US
1913 — BEREFT crazy → Amer. dial.
1914 — BEANY crazy, mentally defective, feeble-minded, insane → Amer. dial.
1914 — SQUIRRELY crazy, eccentric → US sl.
1917 — MAD AS A SNAKE crazy, insane → Aust. sl.
1918 — CUCKOOED crazy, eccentric → sl., orig. US
1920 — BOLTS-AND-NUTS crazy, insane → sl.
1920 — MAD AS A MEAT AXE dangerously crazy; completely insane → Aust. & NZ sl.
1920 — NUTS-AND-BOLTS crazy, insane → sl.
1920 — POTTY crazy, eccentric → sl.
1922 — NUTTY AS A CUCKOO crazy, demented, insane → Amer. dial.
1925 — LOOPY crazy, eccentric → sl.
1926 — HAYWIRE crazy, mentally deranged → Amer. sl.
1926 — WHOPPER-JAWED crazy → US sl. (Bk.)
1928 — CRACKERS crazy, eccentric → sl.. orig. Brit.
1929 — AROUND THE BEND — ROUND THE BEND crazy, beyond sanity → colloq.
1929 — FRUITY crazy, eccentric → US sl.
1930 — HOPPED (UP)  crazy → US sl.
1930 — OFF ONE’S SAUCER crazy, mad, insane, eccentric → Aust. sl.
1930 — UP THE STICK crazy, mad, eccentric → sl.
1932 — MAD AS A CUT SNAKE crazy, insane → Aust. sl.
1932 — NOT RIGHT UPSTAIRS crazy, insane → sl.
1934 — CRACKPOT crazy → colloq.
1934 — LAKES (OF KILLARNEY)  crazy, mad, stupid → UK imperfect rhyming sl. for ‘barmy’
1934 — LAKEY — LAKIE crazy, mad → UK imperfect rhyming sl. (Lakes of Killarney)
1935 — CRAZY AS A SHITEPOKE very crazy → Amer. dial.
1935 — RED-EYED crazy, furious, angry, mad → Amer. dial.
1935 — WACKY — WHACKY crazy, eccentric → sl., orig. US
1936 — SCREWBALL crazy, eccentric → sl., chiefly US
1937 — OFF THE WALL crazy, odd, eccentric; obnoxious, offensive, pointless → US sl.
1938 — LOLO crazy, insane; foolish, dull, stupid → Hawaii
1938 — OUT OF ONE’S NUT crazy → sl.
1938 — PUPULE crazy, insane → Amer. dial.
1939 — A HALFPENNY SHORT OF A SHILLING — HAPENNY SHORT OF A SHILLING slightly crazy; lacking in common sense or intelligence; mentally deficient → sl.
1939 — FERRICKED quite crazy, deranged → Amer. dial.
1940 — ASIATIC crazy; wild; eccentric → World War US Navy usage
1940 — CRAZY AS A TWO-BOB WATCH extremely crazy → Aust. sl.
1940 — OFF ONE’S BEAN crazy, insane, eccentric; demented → sl.
1940 — UP THE WALL(S)  crazy, eccentric, over-excited, anxious → US sl.
1941 — A FEW PICKLES SHORT OF BARREL crazy, eccentric → sl.
1941 — NUTSEY crazy, eccentric → sl., orig. & chiefly US
1941 — OFF THE BEAM crazy, eccentric → sl., orig. US
1941 — TROPPO crazy, mad → Aust. sl.
1942 — FIFTY-CENTS ON THE DOLLAR crazy → US sl. (Bk.)
1942 — MOONY crazy; foolish; silly, esp. in demonstrating affection → sl. (Bk.)
1944 — NOT THE FULL QUID crazy, stupid, eccentric → Aust. & NZ sl.
1945 — DAFT AS A BRUSH crazy, extremely stupid; very silly → sl., orig. Eng. dial.
1945 — MAD AS A BRUSH crazy, stupid → UK sl.
1945 — OFF ONE’S GOURD crazy; deluded → US sl.
1945 — OFF ONE’S NOODLE crazy; deluded → US sl.
1947 — WACKED UP crazy, odd, irrational → US sl.
.M20 — BONKERS  crazy; insane → sl.
1950 — APEY crazy, unstable → US sl.
1950 — FUNNY crazy, insane → sl.
1950 — OFF ONE’S JUMP crazy, insane → Irish sl.
1951 — UP THE WALL crazy; wild → sl.
1952 — CWAZY crazy → US sl.
1952 — DOT crazy → Amer. dial.
1953 — FLAKEY — FLAKY crazy, eccentric → sl., orig. US
1953 — OUT TO LUNCH crazy, eccentric, weird → US students’ sl.
1954 — SILLY AS A TWO-BOB WATCH crazy, dizzy; unreliable → Aust. sl.
1955 — OFF ONE’S NOGGIN mad, crazy → sl.
1957 — ODDBALL crazy, eccentric → sl., orig. US
1957 — OUT OF IT crazy, insane, in a daze → US sl.
1959 — DING-A-LING crazy, foolish → US sl.
1959 — KOOKIE — KOOKY crazy, cranky, eccentric → sl.
1959 — OFF ONE’S TILE crazy, insane → Aust. sl.
1959 — WANTING IN THE UPPER STOREY crazy, insane → sl.
1960 — (RADIO) RENTAL — (RADIO) RENTALS crazy, insane, mad → rhyming sl. for ‘mental’
1960 — BEDONDERED — BEDONNERD crazy → S. Afr. sl.
1960 — DANGBATTED crazy → US sl.
1960 — LIVING ON A WORM FARM crazy, eccentric → sl., orig. US
1960 — LOOPED — LOOPED UP crazy, demented, crazy → US sl.
1960 — LUNCH crazy, stupid, foolish → sl.
1960 — MADMEN crazy, absurd → sl.
1960 — OFF ONE’S FACE crazy → sl.
1960 — ON A TRIP crazy, temporarily insane → sl.
1960 — OUT OF HIS TREE crazy → Amer. sl.
1960 — ROUND THE TWIST crazy, insane → sl.
1960 — SHORT OF THE FULL QUID slightly crazy; lacking in common sense or intelligence; mentally deficient 
1960 — SIX BRICKS SHORT OF A LOAD slightly crazy; lacking in common sense or intelligence; mentally deficient 
1960 — UP THE CREEK crazy, eccentric → sl.
1960 — UP THE CREEK WITHOUT A PADDLE crazy, mad → sl.
1961 — BERKO crazy; furious, angry, excited → Aust. & NZ sl.
1961 — WIGGY crazy; weird; strange → sl.
1962 — BUGGY AS A BEDBUG crazy, insane → Amer. dial.
1962 — BUGGY AS POTATO VINES crazy, insane → Amer. dial.
1962 — WEIRDO crazy, eccentric → sl.
1964 — SPARE crazy, distraught, distracted or distressed; angry → UK sl.
1965 — CRAZY AS A LAUGHING FARM completely crazy → Amer. sl.
1965 — DINKY DAU crazy → Vietnam War usage
1966 — OFF YOUR NANA crazy, insane → Aust. sl.
1966 — OUT OF ONE’S BOX crazy, insane; foolishly wrong, mistaken → Amer. dial.
1967 — MADBALL crazy → Amer. sl.
1968 — WACKED OUT crazy, eccentric, mad → US sl.
1969 — DINKY crazy, wildly enthusiastic → US sl.
1970 — BATSHIT crazy, out of control, angry → US sl.
1970 — BATSO crazy, eccentric → US sl.
1970 — CROCKED crazy; insane → Amer. dial.
1970 — HOPPING crazy → Irish sl.
1970 — MAD-UP crazy → Black British sl.
1970 — OUT OF ONE’S ASS crazy → Amer. sl.
1971 — CRAZY AS A HOOT OWL very crazy → Amer. sl.
1975 — CRAZY AS ADAM’S OFF-OX extremely crazy → Amer. dial.
1975 — NUTSO crazy, eccentric → sl., chiefly US
1975 — UNGLUED insane, crazy → US sl. (Bk.)
1975 — ZONKERS extremely excited; wild, crazy → US sl. (Bk.)
1977 — WACKO — WHACKO crazy, eccentric → sl., orig. & chiefly US
1979 — ILL crazy, wild → US sl., orig. African-American
1980 — BONZO crazy, eccentric → sl.
1980 — CADAZY crazy, mad → Black British sl.
1980 — OFF ONE’S BAP crazy, insane → sl.
1980 — OFF ONE’S CAKE crazy, insane → sl.
1980 — TWEAKED crazy; odd → US sl.
1980 — TWEAKY crazy; odd → US sl.
1980 — WALL-HUGGING crazed, eccentric → sl.
1981 — BARMY AS A BANDICOOT mad; crazy → Aust. colloq. (Bk.)
1982 — TONTO crazy, eccentric → sl., orig. US
1983 — A BRICK SHORT OF A LOAD slightly crazy, lacking in common sense or intelligence; mentally deficient → sl.
1983 — BOZO crazy → Amer. sl.
1985 — A FEW SANDWICHES SHORT OF A PICNIC crazy, eccentric → sl.
1985 — ILLING acting or thinking crazily, wildly, or aggressively → sl., orig. African-American & teen usage
1985 — ONE SANDWICH SHORT OF A PICNIC slightly crazy; lacking in common sense or intelligence; mentally deficient 
1986 — CRAZIER THAN A PEACH-ORCHARD BOAR very crazy → Amer. dial.
1988 — AWAY crazy → Sc. sl.
1988 — SHELL crazy → US students’ sl.
1990 — ADDLED mentally weak, crazy → Amer. dial. (Bk.)
1990 — AG crazy, fun → US students’ sl.
1990 — CRUNK — KRUNK crazy, wild, obnoxious; out of control → US students’ & teen sl.
1990 — EAT UP crazy, strange, unusual → sl.
1990 — LUNCHING crazy, stupid → sl.
1990 — MAGGOTISH crazy, insane → US sl.
1990 — MAGGOTTY — MAGGOTY crazy, insane → US sl.
1990 — MENTLER crazy, insane → sl.
1990 — OFF ONE’S PULLEY crazy, insane, eccentric, mad → sl.
1990 — OFF TAP eccentric, crazy, mad → Aust. sl.
1990 — ON ONE behaving crazily → sl.
1990 — SICK-ASS crazy, unpleasant → US sl.
1991 — NUT-CASE crazy, insane → sl.
1992 — ANIMAL CRACKERS crazy → US sl.
1992 — NUTTIER THAN A PEACH-ORCHARD PIG very crazy → Amer. dial.
1992 — OUT crazy → African-American sl.
1992 — SEVERAL BANANAS SHORT OF A MILKSHAKE slightly crazy; lacking in common sense or intelligence; mentally deficient 
1992 — TWO APPLES SHORT OF A BISCUIT crazy, not completely sane, stupid → UK sl.
1994 — OFFSHORE crazy; silly; outlandish → Amer. dial.
1996 — CRAZIER THAN GIDEON’S GEESE very crazy, disoriented → Amer. dial. (Bk.)
1996 — CRAZY AS A LOON very crazy → Amer. dial. (Bk.)
1996 — ONE SPARK PLUG SHORT OF AN ENGINE slightly crazy; lacking in common sense or intelligence; mentally deficient 
1999 — BENT AS A SCRUB TICK crazy; foolish → Aust. sl. (Bk.)
1999 — SILLY AS A WET HEN crazy, dizzy; unreliable → Aust. sl. (Bk.)
2004 — CRAZY-ASS very crazy → African-American sl.
2006 — BIRDIE — BIRDY crazy; strange → US sl. (Bk.)
2006 — GONZO crazy → US sl. (Bk.)
2006 — OFF THE CHAIN crazy, irrational, out of control → African-American sl.
2007 — BAMMY crazy; eccentric → UK sl. (Bk.)
2009 — A FEW BEERS SHORT OF A SIX-PACK unintelligent; crazy → Amer. sl. (Bk.)
2009 — A FEW CENTS SHORT OF A DOLLAR unintelligent; crazy → Amer. sl. (Bk.)
2009 — A FEW FRIES SHORT OF A HAPPY MEAL unintelligent; crazy → Amer. sl. (Bk.)
2009 — A FEW PEAS SHORT OF A CASSEROLE unintelligent; crazy → Amer. sl. (Bk.)
2009 — A FEW PECANS SHORT OF A FRUITCAKE unintelligent; crazy → Amer. sl. (Bk.)
2009 — A FEW SLICES SHORT OF A LOAF unintelligent; crazy → Amer. sl. (Bk.)
2009 — A FEW SPOKES SHORT OF A WHEEL unintelligent; crazy → Amer. sl. (Bk.)
2009 — A FLEA SHORT OF AN INFESTATION unintelligent; crazy → Amer. sl. (Bk.)
2009 — A HALF SANDWICH SHORT OF A PICNIC unintelligent; crazy → Amer. sl. (Bk.)
2009 — CRAZY AS CATSHIT extremely crazy → Amer. sl. (Bk.)
2009 — FRUITCAKEY crazy → Amer. sl. (Bk.)
2009 — OUT OF ONE’S GOURD crazy → Amer. sl. (Bk.)
2009 — PIXILATED crazy, insane → Amer. sl. (Bk.)
2009 — SCHIZO crazy → Amer. sl. (Bk.)
2012 — DAFT AS A BUSH silly; crazy → Brit. sl. (Bk.)
2012 — MAD AS A BAG OF FERRETS crazy → Brit. sl. (Bk.)

ADVERBS
1937 — DOTTILY in a crazy or eccentric manner; absurdly
1968 — KOOKILY in a crazy or eccentric manner → sl.
1999 — LIKE A TWO-BOB WATCH in a crazy or erratic manner → Aust. sl. (Bk.)

NOUNS
1860 — CRACKINESS craziness; extreme eccentricity → colloq.
1885 — DOTTINESS craziness, eccentricity; mental confusion 
1890 — CRANKNESS a being crazy or cranky 
..L19 — OOPERZOOTICS — OOPIZOOTICS  craziness; a fit of eccentricity → sl.
1910 — CRACKEDNESS craziness, unsoundness of mind 
1939 — LOOPINESS craziness, insanity → colloq.
1950 — LIGHT craziness; insanity, craziness → W. Indies sl.
1962 — KOOKINESS a being crazy or eccentric → sl.

NOUNS, PERSON
1375 — IDIOT a crazy person; a blockhead; a stupid person; an utter fool 
1530 — DOTEHEAD a crazy or foolish person → obs. rare
1568 — DOTER a crazy or foolish person; a dotard; a person whose intellect is impaired due to old age 
1570 — CRACKBRAIN a crazy person → sl.
1599 — EARWIG-BRAIN a person who has a craze or ‘maggot’ in his brain → obs.
1605 — BEETLE a crazy, eccentric, or foolish person; a madman, an obsessive fan → sl.
1657 — BEE-HEAD a crazy person 
1701 — CRACK a crazy person → obs.
..19C — CLUCKEY a crazy, weak-minded person → Eng. dial.
..E19 — POGGLE — PUGGLE a crazy or foolish person; an idiot → Indian now rare or obs
1831 — CRAZE a crazy person; a foolish or irrational person → obs. rare
1831 — QUARTER-CLEFT a slightly crazed person; a crazy person → chiefly Eng. dial.
1832 — BEDBUG a crazy or eccentric person → US sl.
1838 — NONCOMPUSSER a crazy person → sl.
1852 — LOCO a crazy or insane person; one who is out of his mind or obsessed → Amer. dial., derogatory
1856 — QUARTER-CLIFT a crazy person → Ireland
1864 — CRACK-SKULL a crazy person; a person having impaired intellect → rare
1875 — DAG a crazy or eccentric person → Aust. & NZ sl.
1879 — DINGBAT a crazy or eccentric person → US & Aust. sl.
1883 — CRACKPOT a crazy or eccentric person → sl.
1885 — LOON a crazy or eccentric person; a simpleton → sl.
1894 — WEIRDIE — WEIRDY a crazy or eccentric person → sl.
..20C — MAD HADDOCK a very crazy, eccentric, or foolish person → Aust. sl.
..20C — MAN IN THE MOON a crazy or eccentric person → rhyming sl. for ‘loon’
..20C — WONK a crazy, eccentric person → Brit. sl.
1905 — MAD HATTER a highly eccentric or crazy person 
1905 — MAZED-ANTIC a crazy, wild, foolish person → Eng. dial. (Bk.)
1908 — NUT a crazy or insane person; an eccentric; a foolish person → colloq.
1910 — GOOF a crazy, eccentric person → sl.
1915 — FILBERT a crazy, foolish, or eccentric person → Amer. sl.
1915 — SQUIRREL-FOOD a crazy or eccentric person → US sl.
1919 — BANANA a crazy or silly person; a stupid or worthless person; a simpleton → US sl.
1919 — SQUIRREL-BAIT a crazy or eccentric person → US sl.
1933 — SCREWBALL a crazy or eccentric person → sl., chiefly US
1935 — DING-A-LING a crazy or mentally abnormal person; a person with strange or unconventional behaviour → Amer. sl.
1937 — BATBRAIN a crazy or foolish person → US sl.
1938 — GAGA a crazy, eccentric, or senile person → sl.
1938 — HOON a crazy person; a lout; a rough → Aust. sl.
1938 — LOLO a crazy person; a dull, stupid person → Amer. dial.
1938 — PUPULE a crazy or insane person → Amer. dial.
1938 — WACK — WHACK a crazy or eccentric person → sl., orig. US
1940 — ASIATIC a crazy or odd person → US sl.
1941 — LOCO BLOSSOM a crazy or insane person; one who is out of his mind or obsessed → Amer. dial., derogatory
1942 — BATHEAD a crazy or foolish person → US sl.
1942 — FRUITCAKE a crazy, eccentric, or silly person → US sl.
1946 — MESHIGANER — MESHIGGANA — MESHIGINA a crazy or eccentric person → US sl., orig. Jewish-American
1946 — MESHUGA — MESHUGER a crazy or eccentric person → US sl., orig. Jewish-American
1946 — MESHUGANA — MESHUGANER — MESHUGGENER a crazy or eccentric person → US sl., orig. Jewish-American
1946 — MISCHIGUNA a crazy person → US sl., orig. Jewish-American
1947 — ZIGGERBOO an eccentric or crazy person → US sl.
1948 — ODDBALL a crazy or eccentric person → sl., orig. US
1949 — BAKEHEAD a crazy or insane person; a fool, an idiot; a stupid person → US sl.
1950 — ANIMAL a crazy, wild person → sl.
1952 — FLIP a crazy or eccentric person → sl.
1952 — NUTHEAD a crazy or mad person; an eccentric → sl.
1955 — FRUITHEAD a crazy, silly, or eccentric person → US sl.
1955 — WEIRDO a crazy or eccentric person → sl.
1958 — HEAD-THE-BALL a crazy person, esp. one who is violent or unpredictable → colloq., chiefly Irish & Sc.
1959 — FLAKE a crazy, eccentric, or unreliable person → sl., chiefly US
1959 — FRUIT a crazy, eccentric, or silly person → US sl.
1959 — NUT-CASE a crazy or eccentric person → sl.
1960 — KOOK a crazy, cranky, or eccentric person → sl.
1960 — SICKIE — SICKY a person considered to be crazy, insane, or ‘sick in the head’ → sl., orig. US
1960 — WING-DING a crazy, unstable person → sl.
1962 — NUTSY a crazy person → Amer. sl.
1964 — NUTBOY a crazy or mad person; an eccentric → US colloq.
1965 — BATO LOCO a crazy (fellow) Spanish-American; a wild guy → sl.
1965 — WACKER a crazy, zany, irrational, peculiar, eccentric, or amusing person → Aust. sl.
1966 — WILDO a person behaving in a crazy or wild manner → UK sl.
1967 — LOONEY TUNE — LOONY TUNE a crazy person → US sl.
1967 — NUTCAKE a crazy or eccentric person → US sl.
1968 — DIPSTICK a crazy, contemptible person → sl., orig. US
1970 — DING-DING a crazy person → US sl.
1971 — NUTBURGER a lunatic, an eccentric, odd, or crazy person → US sl.
1972 — FRUITBALL a crazy or eccentric person → US sl.
1973 — TONTO a crazy or eccentric person → sl., orig. US
1974 — FIG NEWTON a crazy, silly, or eccentric person → Amer. sl.
1975 — BANANA CAKE a crazy or eccentric person → Amer. sl.
1975 — HAIRPIN a crazy person; a crackpot; a person with a mind bent like a hairpin → Amer. sl. (Bk.)
1975 — NUTSO a crazy or eccentric person → sl., chiefly US
1975 — WIG a crazy or far-out person → US sl. (Bk.)
1977 — WACKO — WHACKO a crazy or eccentric person → sl., orig. & chiefly US
1978 — FRUITBURGER a crazy, eccentric, or silly person → US sl.
1978 — NUTBAR a lunatic; an eccentric, odd, or crazy person → US sl.
1979 — WHACKADOO a crazy person → US sl.
1980 — FRUITBAR a crazy or eccentric person → US sl.
1980 — LOOPER a crazy, disturbed person → sl.
1981 — SPACE CASE a crazy person; a person lacking common sense; one who is out of touch → US sl.
1982 — BATSHIT a crazy or insane person → sl.
1982 — GARBONZO a crazy idiot → US sl.
1983 — SPACE COOKIE a crazy person; a person lacking common sense; one who is out of touch → US sl.
1984 — FRUIT-LOOP a crazy, eccentric, or silly person → US sl.
1987 — FRUIT FLY a crazy, eccentric, or silly person; an idiot → US sl.
1988 — HATTER a crazy, silly person → Aust. sl. (Bk.)
1988 — MICKEY ROONEY a crazy person; a madman → UK rhyming sl. for ‘loony’
1989 — GARBANZO a crazy idiot → US sl.
1990 — MENTLER a crazy person → sl.
1992 — KEITH MOON a crazy or eccentric person; a lunatic → UK rhyming sl. for ‘loon’ 
1996 — HEADBIN a crazy, unstable person; an eccentric; a ‘head case’ → Ulster sl.
1997 — SPACE GHOST a crazy person; a person lacking common sense; one who is out of touch → US sl.
1998 — SPACER a crazy person → Irish sl.
2004 — HEAD JOB a crazy person → sl. (Bk.)
2007 — BAMMY a crazy or eccentric person → UK sl. (Bk.)
2007 — BANANA TRUCK a crazy person → US sl. (Bk.)
2012 — NUTTER a crazy person → Brit. sl. (Bk.)

PHRASES
1945 — OUGHT TO BE PLAYING WITH STRING OF SPOOLS said of an ignorant or crazy person → US Western usage (Bk.)
1949 — NEED ONE’S HEAD EXAMINED someone is crazy → sl.
1970 — YOU’RE OUT OF YOUR TINY MIND you’re crazy, foolish, mad → UK sl.
1985 — THE LIFT DOESN’T GO TO THE TOP FLOOR he’s slightly crazy or lacking in common sense or intelligence 
2006 — HALF A BUBBLE OFF PLUMB giddy; crazy → US sl. (Bk.)
2012 — NOT BATTING ON A FULL WICKET said of an eccentric, crazy, or odd person → Brit. sl. (Bk.)

VERBS
1440 — DOTE to cause a person to become crazy or foolish → obs.
1540 — MADDLE to be or become crazy; to become confused in mind; to be dotingly fond of; to craze; to confused in mind; to bewilder → obs. exc. Eng. dial.
1682 — HAVE A GAD-BEE IN ONE’S BRAINS to be crazy → obs.
1860 — NOT HAVE ALL ONE’S BUTTONS to be crazy, insane, or unstable → sl.
1876 — HAVE AN ANGLE-TWITCH IN THE BONNET to be not quite sane → Eng. dial., (angle-twitch = worm)
1892 — BE SHORT OF A SHEET to be slightly crazy or idiotic → Aust. sl. (Bk.)
1892 — HAVE A SHINGLE SHORT to be slightly crazy or idiotic → Aust. sl. (Bk.)
..E20 — HAVE KANGAROOS (LOOSE) IN ONE’S TOP PADDOCK  to be crazy or very silly → Aust. sl.
1910 — GO FANTI to go crazy, to run amok → sl.
1911 — HAVE BATS IN THE BELFRY to be crazy or eccentric 
1929 — HAVE ONLY FIFTY CARDS IN ONE’S DECK to be crazy or stupid → US sl.
1943 — GO TROPPO to go crazy or mad → Aust. sl.
1949 — HAVE A FEW BUTTONS MISSING to be crazy, eccentric, stupid, or less intelligent than average → Amer. dial.
1950 — FLIP to go crazy 
1951 — DRIVE UP THE WALL to cause to become crazy or furious; to infuriate → sl.
1951 — FLIP ONE’S LID to go crazy; to lose control → orig. US
1951 — GO APESHIT to go crazy; to lose control → US sl.
1951 — GO UP THE WALL to become crazy or furious → sl.
1952 — FLIP ONE’S WIG to go crazy; to lose control →  orig. US
1964 — FLIP OUT to go crazy or wild; to lose control, orig. under the influence of drugs 
1970 — DO ONE’S FRUIT to go crazy; to lose one’s temper → sl.
1970 — SNAP to go crazy; to freak out → Amer. sl.
1971 — GO BATSHIT to act crazily; to become insane → sl.
1985 — HAVE ONE OAR OUT OF THE WATER to be slightly crazy; to be lacking in common sense or intelligence 
1986 — HAVE FEATHERS IN THE HAIR to be a bit crazy → Amer. dial.
1986 — ILL to behave in a crazy, wild, or aggressive manner → US sl., orig. African-American
1986 — ILLIN’ to behave in a crazy or wild manner → US sl., orig. African-American
1995 — HAVE A HOLE IN ONE’S HEAD to be crazy → US sl. (Bk.)
1999 — HAVE NITS IN THE NETWORK to be crazy or insane → Aust. sl. (Bk.)
2006 — DRIVE ONE BONKERS to drive someone crazy → US sl. (Bk.)
2006 — DRIVE ONE NUTS to drive someone crazy → US sl. (Bk.)
2006 — GO BITCHCAKES to go wild or crazy → US sl. (Bk.)
2006 — GO ZONKERS to go slightly crazy → US sl. (Bk.)
2006 — HAVE ROCKS IN ONE’S HEAD to be silly or crazy → US sl. (Bk.)