Reverse Dictionary: BLUNDER

ADJECTIVES
19C.. ► MAFFLING blundering, clumsy, foolish, stupid → Eng. dial.
1825 ► RAMSTACKERIN behaving in a blundering, awkward, loutish manner → Sc. obs.
1840 ► DUNDERING blundering, stupid, foolish 
1864 ► RAMBLESOME → RAMMELSOME blundering, hot-headed, impetuous → Sc.
1884 ► BUMBLY awkward, clumsy, blundering, esp. in an endearing way
1884 ► GAMMY blundering, good-for-nothing, idle → Eng. dial.
1885 ► SQUIWINIKIE blundering, awkward → Amer. dial.
1887 ► BREAK-NECK blundering or lumbering headlong 
1898 ► BLAWTHERING blundering, clumsy, awkward → Eng. dial. (Bk.)
1911 ► BLENTERING → BLINTERIN’ blundering → Sc. (Bk.)
1945 ► ODDBALL prone to blunder; disorganized; unreliable → sl.

NOUNS
1430 ► BALK → BAULK a blunder, a slip, a mistake → obs.
L18.. ► FOX’S PAW a blunder, a mistake → (French faux pas)
1823 ► BUMBLE a mistake, a blunder; a bungled task → orig. Sc. & N. Eng. dial.
1841 ► RIMRACK a blunder, a foul-up → Amer. dial.
1865 ► MISSMENT a blunder, an error; a mistake → Eng. & Amer. dial.
1867 ► MOPPLE a blunder, a mistake → Eng. dial.
1872 ► HOWLER something excessive; a glaring blunder, esp. in an examination, etc. → sl.
1876 ► MAUNGE a blunder, a confused mess, a mess, a muddle; a dilemma, trouble → Eng. dial.
1878 ► ATROCITY a very bad blunder, violation of good taste or manners, etc. → colloq.
1884 ► BREAK blunder, an error, a mistake, often in a social situation; a faux pas → Amer. dial.
1887 ► BOBBLE a blunder, a mistake, an error → Eng. dial.
1889 ► BALLS a blunder, an error; a botch, a muddle → sl.
1898 ► BARNEY blunder, an error, a mistake; a piece of bad workmanship → Eng. dial. (Bk.)
1898 ► BLUR a blunder, a mistake, a spoilt piece of work → Eng. dial. (Bk.)
L19.. ► BOX Aust. sl. – a blunder, a mix-up, a mess
1900 ► BLOB a blunder; an error; a mistake → Amer. dial.
1904 ► BEEF a blunder, an error → Amer. students’ sl. (Bk.)
1904 ► BULL a blunder, an error; a mistake 
1905 ► MANCH a blunder, a dilemma; a confused mass; a mess; a muddle → Eng. dial. (Bk.)
1905 ► MISWEM a blunder, a mistake → Eng. dial. (Bk.)
1911 ► FOOZLE a blunder, a miss → Sc., orig. sporting usage (Bk.)
1911 ► MISKUBOBBLE a blunder; an error; a mistake → Amer. dial.
1912 ► BONER a blunder → US sl.
1912 ► MISBOBBLE a blunder; an error; a mistake → Amer. dial.
1918 ► BONEHEAD a blunder; an error; a mistake → Amer. dial. (Bk.)
1929 ► BALLS-UP a blunder, an error → sl.
1930 ► WRONG RIFF a blunder, a mistake → African-American sl.
1937 ► BISH a blunder, a mistake → sl.
1940 ► FRIGG-UP → FRIG-UP a blunder, a disaster; a mess → sl., orig. Aust.
1941 ► BLUE a blunder; an error; a mistake → Aust. & NZ sl.
1942 ► APPLE-KNOCKER a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BAD BREAK a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BAD CRACK a verbal blunder → Amer. sl. (Bk.)
1942 ► BARNABY a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BLUNDERHEAD a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BONE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BONEHEAD BUTCH a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BONEHEADER a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BONEHEAD MOVE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BONEHEAD PLAY a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BOOB STUNT a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BREAKER a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BRODIE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BRUTAL BRODIE a bad blunder → Amer. sl. (Bk.)
1942 ► BUST  a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► BUTCH a blunder, a mistake, an error; in radio & TV: an error made in delivering lines → US sl.
1942 ► CLUCK a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► CROPPER a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► DUMB PLAY a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► DUMB TRICK a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► DUMMY a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► FOOL ACT a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► FOOL MISTAKE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► FOOL MOVE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► FOUL a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► IRISH BULL a verbal blunder → Amer. sl. (Bk.)
1942 ► LEFT-TURN a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► MAJOR MUFF a bad blunder → Amer. sl. (Bk.)
1942 ► MESSY BOBBLE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► MISCUE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► MISCUEBOBBLE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► MISFIRE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► MISLICK a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► MISS a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► MOUSETAKE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► MUFF a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► SCREWY MOVE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► SCREWY PLAY a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► SKEWGEE a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► SLIPSLAP a verbal blunder → Amer. sl. (Bk.)
1942 ► SLIPSLOP a verbal blunder → Amer. sl. (Bk.)
1942 ► SLIP-UP a blunder; an error; a mistake → Amer. sl. (Bk.)
1942 ► SOCIAL BONER a blunder, a social error → Amer. sl. (Bk.)
1942 ► SOCIAL BUTCH a blunder, a social error → Amer. sl. (Bk.)
1942 ► TRIP-UP a blunder; an error; a → Amer. sl. (Bk.).
1942 ► WRONGER blunder; an error; a mistake → Amer. sl. (Bk.)
1944 ► DILBERT a blunder → US sl.
1949 ► FUCK-UP something that’s gone wrong; a mess; a confusion; a blunder, a mistake → sl. 
M20. ► CLINKER a blunder, an error in performance, a blunder → N. Amer. sl.
1950 ► BEEFSTEAK a blunder, a mistake → Amer. dial.
1950 ► GOOF UP a blunder → US sl.
1951 ► BLOOPER a blunder → US sl.
1953 ► FOUL-UP a blunder; an error → US sl.
1958 ► PENNY BANGER a blunder, a mistake → rhyming sl. for ‘clanger’
1959 ► BOOB a blunder, an error, a foolish mistake → sl.
1968 ► MISCOBOBBLE a blunder; an error; a mistake → Amer. dial.
1970 ► CLUNKER a blunder, a mistake → US sl.
1970 ► COOLIE a blunder; an error → US homosexual sl.
1975 ► BLOOP a fluke; a blunder → US sl. (Bk.)
1999 ► STUFF-UP a blunder, a mix-up → Aust. sl. (Bk.)
2006 ► FLUB → FLUB-UP a blunder, an error → US sl. (Bk.)

NOUNS – PERSON
1450 ► MAFFLARD a blundering or stammering fool → obs., contemptuous usage
1530 ► BUMBLER a person who does something in a confused, blundering, or ineffectual way; an incompetent person; a bungler
1553 ► LOBCOCK a blundering fool; a clumsy, lubberly fellow; a country bumpkin → obs. exc. Eng. dial.
1577 ► DOR-HEAD a blundering or stupid fellow → obs.
1585 ► BUMBIE a blundering or incompetent person → Sc. obs.
1589 ► GOTHAMIST a silly blunderer; one who takes after the men of Gotham; a person deficient in wisdom → obs.
1593 ► LUMBERER a person who goes blunderingly or clumsily 
1596 ► BLUNDERKIN a blundering fellow; a muddlepate → obs.
1600 ► BOOBY a blundering, childish, foolish, or inept → colloq.
1604 ► LOB-COAT a blundering fool; a country bumpkin; a clown, a lout, a boor; a heavy, dull person → obs.
1638 ► OAF a blundering, awkward lout; a half-wit; a simpleton; a fool; a stupid fellow; a blockhead 
1697 ► BLUNDERHEAD a blundering, confused, muddle-headed fellow 
1789 ► BUMBLE a blundering or incompetent person → Sc. obs.
19C.. ► MAFFLE-HORN a blundering, incapable, inefficient person → Eng. dial.
1812 ► RAM a blundering, headstrong, impetuous person → Sc.
1824 ► GLUNDIE → GLUNDY a blundering, clumsy, or surly person; a fellow with a sulky look, but not sulky for all → Sc. obs.
1825 ► RAMSTACKER a blundering, awkward, loutish fellow → Sc. obs.
1832 ► MAGUFFIN a blundering, foolish person; an oaf → Sc.
1850 ► BLUNDER-GUTS a blundering, clumsy person → Eng. dial.
1876 ► ZOUNDERKITE a blundering, stupid person; one whose stupid conduct results in awkward mistakes → Eng. dial. (Bk.)
1877 ► WACK-HEAD a stupid blunderer; a blockhead → Eng. dial. (Bk.)
1898 ► BLUNDERBUSS a blundering, clumsy person → Eng. dial. (Bk.)
1900 ► MUTT an awkward, ignorant, or blundering person; an incompetent person → sl.
1901 ► LUMPKIN a blundering, clumsy person → Eng. dial.
1905 ► RAMSTALKER a blundering, clumsy, awkward fellow → Sc. (Bk.)
1906 ► GASOB → GAZOB → GAZOOB a blunderer, a fool, a simpleton → Aust. sl.
1911 ► BLUITER a blundering, coarse, clumsy, inconsiderate fellow → Sc. (Bk.)
1911 ► BLUNNERBOAR a blundering fool → Sc. (Bk.)
1911 ► BOUFF a blundering, stupid fellow → Sc. (Bk.)
1911 ► GOOF a blunderer, a fool → Sc. (Bk.)
1913 ► GAZABO a blundering or officious person → Amer. dial. (Bk.)
1919 ► BONE-TOP a blunderer; a dull or stupid fellow → Amer. dial.
1943 ► SAD SACK a blundering, maladjusted, confused, unlucky, introverted, socially undesirable boy or man → Amer. sl.
1945 ► FUCK-UP a person who makes a mess of things; an incompetent person; a blunderer → sl.
1945 ► GOOF-OFF a blunderer; a person who is habitually inattentive to duty; a loafer, an idler → US sl., orig. military usage
1952 ► FART-KNOCKER an incompetent blunderer → US sl.
1957 ► GOOF-UP a blunderer, a bungler → US sl.
1968 ► BARSE a consistent blunderer → US students’ sl.
1989 ► BIG DUMB SWEDE a blunderer; a dope → sl. (Bk.)
1990 ► CACKER a blunderer; a person who makes a mess → US sl.

VERBS
1400 ► LUMBER to move in a blundering or clumsy manner 
1430 ► MAKE A BALK to blunder, to go wrong → obs.
1530 ► FAULT to blunder, to make a mistake, to be in error → obs.
1533 ► BUMBLE to act or move in an awkward or confused manner; to blunder about clumsily, incompetently, or carelessly
1581 ► LUMPER to blunder or stumble along; to move clumsily → obs. exc. Eng. dial.
1652 ► HALLUCINATE to blunder, to mistake, to be deceived, to suffer illusion, to entertain false notions → obs.
1766 ► FALL THROUGH to blunder, to bungle; to spoil, to prevent by mismanagement → Sc.
1781 ► MAFFLE to blunder, to make mistakes, to bungle, to muddle → obs. exc. Eng. dial.
1796 ► PUT ONE’S FOOT IN IT to spoil something by some tactless blunder or remark → colloq.
19C.. ► TAKE A STINK FOR A NOSEGAY to make a foolish blunder; to mistake egregiously 
1816 ► RAM-STAM to blunder, walk, or rush about in a headlong, impetuous manner → Sc.
1835 ► FIRE INTO THE WRONG FLOCK to blunder, to be mistaken; to ‘bark up the wrong tree’ → Amer. dial.
1849 ► PLAY THUNDER to blunder, to err, to commit an error → Amer. dial.
M19. ► FLUMMOX → FLUMMUX to blunder; to fail; to die → US sl.
1869 ► SHOOT AT A PIGEON AND KILL A CROW to blunder wilfully; to make a mistake 
1870 ► BOGGLE to blunder, to bungle; to do something badly; to do a clumsy or hurried job of repairing something → Amer. dial.
1897 ► PLAY WHALEY to blunder, to fail; to play havoc with something; to spoil, to ruin; to make a mistake → Amer. dial.
1898 ► BLAWTHER to blunder, to bungle; to stumble → Eng. dial. (Bk.)
1898 ► CAT-HAM to do anything blunderingly or awkwardly → Eng. dial. (Bk.)
L19.. ► BALL UP to blunder, to muddle, to err, to make a mistake → sl.
L19.. ► FLUNK to blunder; to make a mistake → US sl.
L19.. ► GO OFF THE RAILS to blunder, to make a mistake → sl.
1901 ► BALAHACK → BALLYHACK → BOLLYHOCK to blunder, to confuse → Amer. dial.
1905 ► DROP ONE’S CANDY to make a big blunder or serious mistake; to do something to cause the failure of a plan → Amer. dial.  (Bk.)
1905 ► RAMSTACKER to act in a blundering, clumsy, awkward manner → Sc. (Bk.)
1910 ► BALLS UP to blunder, to make a mess of, to ruin, to make a mistake → sl.
1910 ► GET IN WRONG to blunder; to get oneself into trouble → sl.
1911 ► BLUNNER → BLUNTHER to blunder → Sc. (Bk.)
1913 ► DULL to make a stupid blunder, mistake, or miscalculation → Amer. dial. (Bk.)
1913 ► GET ONE’S FEET WET to blunder, as in some remark or an investment → Amer. dial. (Bk.)
1913 ► PLAY SMASH to make a great blunder; to do a thing wholly wrong → Amer. dial. (Bk.)
1913 ► PULL A BONEHEAD PLAY to blunder; to commit an error, esp. an egregious one → Amer. sl.
1913 ► PULL A BONER to blunder; to commit an error, esp. an egregious one → Amer. sl.
1920 ► BOX to make a blunder; to mix something up; to shuffle cards → Aust. & NZ sl.
1920 ► SKID(S)  to blunder, to make a mistake, to decline → US sl.
1923 ► DROP A BRICK to blunder, to commit an indiscretion, make a ‘bloomer’ → sl.
1930 ► FRIGG UP → FRIG UP to make a blunder, to make a mess of → sl., orig. Aust.
1930 ► GOOF-OFF to blunder; to wreck → sl.
1935 ► CUT A HOG to blunder, to make an embarrassing mistake; to make a mess of things → African-American sl.
1935 ► FALL DOWN (ON)  to blunder, to make a bad mistake or error → colloq.
1940 ► DROP THE BALL to blunder at a critical moment → US sl.
1940 ► GOOF → GOOF IT → GOOF UP to blunder, to make a mistake → sl.
1947 ► BOOB IT to make a blunder → Amer. sl. (Bk.)
1947 ► DO A DIZZY to make a blunder → Amer. sl. (Bk.)
1947 ► DOPE OFF to make a blunder → Amer. sl. (Bk.)
M20. ► SNAFU to make a blunder; to mess up; to ruin something → US sl.
1953 ► FOUL UP to blunder; to mess up → US sl.
1960 ► CHUMP OUT to blunder, to make a mistake → African-American sl.
1961 ► MAKE A BLUE to blunder, to make a mistake or error → Aust. & NZ sl.
1967 ► MIFF to blunder; to make a mistake; to botch something → Amer. dial.
1968 ► FART OFF to blunder through inattention; to fool around; to shirk one’s duties; to procrastinate → Amer. sl.
1968 ► FLUBDUB to blunder → Amer. dial.
1970 ► PULL A COOLIE to blunder, to err → US homosexual sl.
1970 ► STEP ON IT to blunder, to make a serious mistake → US Army sl.
1970 ► STEP ON ONE’S DICK to blunder, to make a serious mistake → US Army sl.
1970 ► STEP ON ONE’S SHVANTZ to blunder, to make a serious mistake → US Army sl.
1980 ► NAFF UP to blunder, to make a mess; to ‘fuck up’ → euphemism
1999 ► DROP A BRICK to make a social blunder; to import embarrassing information, usually unintentionally → Aust. sl. (Bk.)
1999 ► DROP A CLANGER to make a social blunder; to import embarrassing information, usually unintentionally → Aust. sl. (Bk.)
2006 ► CHUNK to blunder, to do badly → US sl. (Bk.)