Reverse Dictionary: GULLIBLE

ADJECTIVES
BAD gullible, susceptible to deception → 1809 UK criminals’ sl.
BAMBOOZABLE BAMBOOZLABLE gullible → 1886 UK sl.
BIRD-WITTED foolish, scatter-brained, gullible → 1605 UK sl.
BLUE-EYED innocent, gullible → 1967 US sl. (Bk.)
► BOOF-HEADED gullible; foolish; stupid → c1930 Aust. sl.
► BUBBLEABLE capable of being duped, gullible → 1664 obs.
► CABBAGE-LOOKING silly-looking; naive, gullible → 1895
► CHUMP stupid, gullible → 1885 sl.
► CHUMP-ASS stupid, gullible → 1999 sl.
► CHUMPISH stupid, gullible → 20C sl.
► CHUMPY naive, gullible → 1891 US sl.
► CHUPID ► CHUPIDEE CHUPIT ‘TUPID gullible, ignorant, stupid → 1869 W. Indies
► CLEVER agreeable but somewhat simple-minded; gullible → 1781 Amer. dial.
► CULLIBLE easily made a fool of or deceived; gullible → 1811 obs.
DUPABLE capable of being duped; gullible → 1833
► EASY easily taken advantage of or imposed upon; gullible → 1629
FACILE gullible, weak-minded → 1681 chiefly Sc. Law usage
FLATTIE FLATTY gullible, naive → 1842 UK criminals’ sl.
FLOP-EARED exceptionally stupid or gullible → 1845 US sl.
FOO-FOO credulous, gullible → 1950 W. Indies
FOOL-FOOL simple-minded, naive, gullible → 1868 chiefly Jamaican
FOUR-CORNERED stupid, gullible → 1957 African-American sl.
GREEN naive, gullible → 1605
GULLABLE gullible → 1817
GULPY gullible → 1890 UK sl.
HAPPY-CLAPPY naive, gullible, i.e. typical of the evangelical church and its devotees → 1999 sl.
HERBAL gullible, naive → 1900 US criminals’ sl.
HIGH-SHOED countrified, gullible → 1666 UK sl.
► HUMBUGGABLE capable of being humbugged, gullible → 1819
► IMPOSABLE capable of being imposed upon or cheated; gullible, dupable → a1734
JAY gullible → 1901 US sl.
JOSSEY foolish, gullible → 1900 UK sl.
KENZ gullible, simple-minded, easily fooled → 1996 W. Indies
LOP-EARED exceptionally stupid or gullible → 1846 US sl.
► NEW naive and gullible → 1886 US sl.
PIGEONABLE easily cheated, gullible → 1844 colloq., obs.
PRACTICABLE easily manipulated; gullible → 1809 sl., obs.
SIMPLE-MINDED naive, innocent, gullible → 1556 obs.
SIMPLY DISPOSED gullible, credulous → 1848 obs.
► SIMPY foolish, gullible → 1942 US sl. (Bk.)
SUCKER-WILD extremely stupid or gullible → 1969 US sl.
SWEET of human characteristics: gullible → 1671 UK sl.
► SWINDLEABLE vulnerable to being defrauded or swindled; gullible → a1876
UNKNOWING naive, gullible → 1818 UK
► VERDANT of persons: green, inexperienced, gullible → 1824
WEAK easily fooled or deceived, gullible → 1500
YOBBISH naive, gullible → 1910 chiefly Brit., Aust., & NZ
YOBBY foolish, gullible → 1910

NOUNS
► CULLIBILITY gullibility → 1728 obs.
DUPABILITY gullibility → 1841
FOOL’S TRAP something designed to deceive or take advantage gullible or naive people → 1617
FOOL TRAP something designed to deceive or take advantage gullible or naive people → 1631
GREENNESS naivety, gullibility → 1548
GULLABILITY gullibility → 1822
GULLABLENESS gullibility → 1830
GULL-TRAP an establishment designed to fleece the gullible and innocent → 1850 US sl.
OVERCREDULITY excessive credulity or gullibility → 1625
SUCKER PLAY any form of scheme intended to trap a gullible victim → 1896 US sl.
► VERDURE signs of gullibility → 1861

NOUNS – PERSON
► ABRAM a gullible fool; a cuckold → 1639 UK sl.
► AIREDALE a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► ALVIN a gullible fellow, esp. a countryman; a naive, easily cheated person → 1942-49 Amer. carnival usage
► APSAY a gullible person; a dupe; an oaf, a dullard → 1942 Amer. Pig Latin for ‘sap’ (Bk.)
► ARBUCKLE a gullible person; a dupe → 1942 Amer. sl. (Bk.)
ARSE-LICKER a gullible person, a ‘sucker’ → 1999 NZ prison sl.
► BABE IN ARMS a naive or gullible person → 1999  (Bk.)
► BABE IN THE WOODS a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► BATTERLASH a small-witted person; a foolish or gullible person → 1867 Eng. dial.
► BATTY WAX a stupid, gullible person → 1996 W. Indies
► BELIEVER a gullible person who will believe whatever they are told → 1925 US sl.
BENJAMIN a naive, gullible young man → 1819 UK sl.
BILLY BUTTON a gullible fool, especially one who performs a job of work without first making sure that they will be paid → 1996 W. Indies
► BISCUIT a gullible person → 1989 US students’ sl. (Bk.)
BITCH a notably gullible person → 2001 NZ prison sl.
► BOOB a gullible person; a dupe → 1914 criminals’ sl. (Bk.)
► BOOFHEAD a fool; a very gullible person → c1930 Aust. sl.
BUCKWHEAT a naive peasant, a gullible country person → 1866 US sl.
BUCKWHEATER a naive peasant, a gullible country person → 1881 US sl.
► BUSH BUNNY a gullible fool → 1927 Aust. sl.
► BUZZARD a gullible and ignorant person → 1367 sl.
BUZZARD-HEAD a gullible dupe; a weak, foolish person → 1909 sl.
► CAKE a person regarded as gullible, foolish, or weak in character → 1766
► CASPAR a gullible person; a dupe → 1942 Amer. sl. (Bk.)
CEMENT-HEAD a gullible, conventional person → 1948 US teen sl.
► CHUMP a fool; anyone gullible or easily taken in ..1682 sl.
► CHUMPIE a fool; anyone gullible or easily taken in ..L19 sl.
► CHUMPKIN a fool; anyone gullible or easily taken in → 1901 sl.
► CHUPA a sucker; a gullible or easily deceived person; often used affectionately → 1996 US students’ sl.
► CHUPIDEE ► CHUPIDDY ► CHUPIDIE ► CHUPIDY a gullible, ignorant fool → 20C W. Indies sl.
► CINCH a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► CLAY PIGEON a gullible person → 2006 US criminals’ sl. (Bk.)
CLEM a gullible person → 2012 US sl.
► CLUCK a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► CLUNK ► CLUNKS a gullible person; a dupe → 1942 Amer. sl. (Bk.)
COCK ROBIN a foolish or gullible man → 1633 sl., obs.
► COME-ON TYPE, THE a gullible person; a dupe → 1942 Amer. sl. (Bk.)
CONEY CONIE CONNY CONY a gullible person; the target of a swindler, a dupe → 1591
► COUNTRY BOOBOO a naive, gullible person → 1996 British Virgin Islands
CRAB a gullible person → 1825 sl.
CUFFY a fool, a gullible person → 1943 W. Indies
► CULL a dupe, a gullible person; a silly fellow, a simpleton, a fool; a man, a fellow, a chap → 1698 Eng. dial. & sl.
CUNNINGBERRY a fool, a gullible person → 1823 UK sl.
CUNNINGHAM MR. CUNNINGHAM a fool, a gullible person → 1734 UK sl.
► DAISY one who is credulous or gullible → 1880 US students’ sl.
DAW a gullible simpleton → 1986 Ireland
► DIZZY FLAT a gullible person; a dupe → 1942 Amer. sl. (Bk.)
DOE a gulllible person, a fool → 1961 African-American sl.
DR. GREEN a native, gullible young person → 1859 US sl.
► DRY-LAND SUCKER a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► DUCK an unrelentingly gullible and trusting person; an odd person → 1848 US prison sl.
► DUCK SOUP a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► DUMB OTIG a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► EASY a soft or gullible person; an easy mark → 1903 US sl.
EASY LAY a gullible person → 2001 NZ prison sl.
► EASY MARK someone or something overcome, mastered, or persuaded without difficulty; a gullible person; anything achieved with ease → 1845 sl.
► EASY MONEY a gullible person → 1968 US students’ sl. (Bk.)
► EASY PICKIN’S a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► EASY TOUCH one who can be easily solicited for money or favours; a gullible person, esp. someone easily induced to part with money → 1930s sl.
► FALL GUY a gullible person → 1906 sl., orig. US
FETCH a gullible person, a ‘sucker’ → 1898 UK sl.
► FISH a gullible or naive person, a dupe, a greenhorn → 1573
FLAT a gullible person → 1747 UK sl.
► FLATTY a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► FLY-FLAT a gullible person who thinks himself clever → 1864 criminals’ sl.
FON a foolish or gullible person → 1400 obs.
FOO-FOO FU-FU a native, gullible, foolish person → 1837 US sl.
► FOOZLE a conservative, one who is behind the times; a gullible fool → 1834 UK sl.
FRESH a gullible person, a potential victim → 1881 US criminals’ sl.
► FRUIT a gullible person; a dupe → 1894 sl., orig. US
► FUZZTAIL a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► GAGGEE one who is imposed on by another; a gullible person → 1819
GARBAGEHEAD a gullible fool → 1994 US drug culture sl.
► GAUM ► GAWM ► GOM GORM a painfully stupid or gullible person; a fool; a simpleton; a lout → 1837 sl., orig. Irish
► GAWMOGE a painfully stupid or gullible person; a fool → 1910 Ireland English (Bk.)
► GAY a gullible victim, i.e. of a swindler; a dupe, a sucker; a ‘civilian’ → 1932 Aust. criminals’ sl.
► GAYLO a gullible victim, i.e. of a swindler; a ‘civilian’ → 1945 Aust. criminals’ sl.
► GHOMEY ► GOMEY a painfully stupid or gullible person; a fool → 1837 sl., orig. Irish
► GIL ► GILL ► GILLS a gullible or credulous person; a fool → 1592
► GILLIE a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► GILLY an outsider, an amateur, e.g. as regards confidence trickery, carnival work; a gullible rustic; a dupe → 1887 US sl.
GINNEY GUINEA a foolish, gullible, or insignificant person → 1914 US sl.
► GLASS JAW a coward; one easily defeated; a gullible person; a dupe → 1927 US students’ sl.
► GOAT a gullible person; a fool; one who could easily become a scapegoat → 1841 colloq.
GOBDAW a gullible simpleton → 1940 Ireland
GOBEMOUCH a gullible or credulous person → 1818
GOBSHITE an incompetent, foolish, or gullible person → 1946 chiefly Ireland, derogatory
► GO-FOR a gullible person; a dupe → 1942 Amer. sl. (Bk.)
GOMBEEN a painfully stupid or gullible person → 1837 orig. Ireland
► GOMER a fool; a gullible, simple-minded person from a rural area → 2009 Amer. sl. (Bk.)
► GOMMOUGE a painfully stupid or gullible person; a fool; a simpleton; a lout → 1837 sl., orig. Irish
► GONEY a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► GOOD LAY a gullible person; a dupe → 1942 Amer. sl. (Bk.)
GOOD ONE a gullible fool → 1887 US sl.
► GOONEY a gullible person; a dupe → 1942 Amer. sl. (Bk.)
GOOSE a gullible countryman; a sucker → 1915 Aust. sl.
► GREENER a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► GREENIE a gullible person; a dupe → 1942 Amer. sl. (Bk.)
GREENLANDER a gullible, innocent person → 1838 sl.
► GUDGEON a credulous, gullible person; one who will swallow anything → 1579
► GULPIN a person who will swallow anything; a credulous or gullible person; a simpleton → 1867
► GUPPY a gullible person; one easily taken advantage of → 1971 US students’ sl.
HIC ► HICK a  potential victim; a gullible simpleton; a silly fellow → 1663
► HICKSTER a gullible, unsophisticated, or unfashionable person → 2001 UK sl.
HOOSIER a gullible person → 1847 US criminals’ sl.
► ICK a fool, a gullible or easily deceived person → 1930s African-American sl.
► ICKAROO a fool, a gullible or easily deceived person → 1930s African-American sl.
► IMBO a simpleton, a fool; an imbecile; a gullible person, esp. the victim of a criminal → 1953 Aust. sl. 
► JABONEY a gullible person; a dupe → 1931 Amer. sl.
► JAW a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► JELLY BEAN a gullible person; a dupe → 1942 Amer. sl. (Bk.)
JO a gullible fool → 1681 US teen sl.
JOE SOAP a gullible person; a fool → 1943 UK sl.
JOHN a gullible or easily fooled person, a dupe → 1908 US sl.
► JOHNNY SAP a gullible person; a dupe → 1942 Amer. sl. (Bk.)
JONATHAN a gullible peasant; an innocent → 1852 US sl.
► JOSKIN a gullible person; a dupe → 1942 Amer. sl. (Bk.)
JUG a fool, a gullible person → 1569 UK sl.
► JUGGINS a dolt; a fool; a soft-head; gullible person; a dupe → 1682
► LEAD-PIPE CINCH a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► LEMON a gullible person → 1908 sl.
LIGHT HEAD a silly or gullible person → 1536
LILY a gullible person → 1908 US criminals’ sl.
► LIVE ONE a gullible person; a dupe → 1904 US sl.
LOBSTER a slow-witted, awkward, or gullible person; a dupe → 1700 US sl.
LOLLIPOP ► LOLLYPOP a gullible person; a dupe → 1907 sl.
► LOOGAN ► LOOGIN ► LUKEN a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► MANMANPOUL a gullible fool → 1996 W. Indies sl.
► MARK a gullible person; a dupe → 1733 sl.
► MEAT a gullible person; a dupe → 1942 Amer. sl. (Bk.)
MEAT PUPPET a gullible person → 1984 US sl.
► MOEGIE ► MOEGOE ► MOGGOE ► MOGO a country bumpkin; a rustic; a dull, foolish, or gullible person; a person who fails to fit in, a misfit; a lazy lout → 1953 S. Afr. colloq., derogatory
► MONKEY a gullible person; a victim of a swindler; a dupe → 1922 US criminals’ sl.
► MONKEY-MAN a man likened to or supposed to resemble a monkey in some respect; a weak or gullible man, esp. one subservient to his wife or lover, or to women generally → 1840 African-American sl., chiefly derogatory
► MOOCH a slow-witted person; one who is easily cheated, deceived, imposed upon, or swindled; a gullible or naive person; a dupe, a sucker → 1935 colloq.
► MOOCHIE a gullible or naive person → 1972 US gambling sl.
► MOUTH a person who talks foolishly; a slow-witted or gullible person; a fool; a dupe → 1663 orig. cant
► MR. BLOCK a gullible person → 1930 US tramps’ sl.
MR. BOOB a gullible fool → 1913 US criminals’ sl.
► MR. GREEN a gullible man; a ‘sucker’ → 1827 UK sl.
► MUG a stupid or incompetent person; a fool or simpleton; a gullible person, a dupe → 1857 colloq.
► MUGGINS a gullible person; used to refer self-deprecatingly to oneself as someone easily fooled or imposed on → 1973 sl.
► MULLET a gullible person → 1955 US sl.
MUTTON a gullible person; a ‘sheep’ → 1915 Aust. sl.
► NIBBLER a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► NOSE OF WAX a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► O’SULLIVAN a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► OTIG a gullible person; a dupe → 1942 Amer. sl. (Bk.)
PANCAKE a naive, gullible person → 1831 UK sl.
► PATSY a gullible person → 1903 sl., orig. US
► PIE a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► PIGEON a naive or gullible person; a dupe → 1525 colloq.
► POOR FISH a gullible person, a dupe, a greenhorn; an undesirable person, a jerk → 1900 Amer. dial.
PRECKY ► PREKE PREKEH PREKKEH ► PREKY a fool, a gullible person → 1943 W. Indies
► PULL-OVER a gullible person; a dupe → 1942 Amer. sl. (Bk.)
PUPPET-HEAD a gullible, conventional person → 1982 US teen sl.
► PUSH-OVER a gullible person; a dupe; one who is easily persuaded, outwitted, or overpowered → 1907 colloq., orig. US
PUT a gullible or foolish person → 1688 UK sl.
REUBEN a fool, a gullible person → 1902 US sl.
► RIPE SUCK a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► ROUND-HEELER a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► RUMMY a gullible person; a dupe → 1912 US sl.
► SAP a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► SAPEROO a gullible person; a dupe; a complete fool → 1950 Amer. sl.
► SAPPO a simpleton; a blockhead; a fool; a gullible person; a dunce; a dupe → 1817 sl.
► SAUSAGE someone foolish or gullible; used as a gently reproving term of address → 1982 UK sl.
SCHLEM SCHLEMEEL SCHLEMIEHL ► SCHLEMIEL ► SCHLEMIHL ► SCHLEMMIL ► SCHLIEMEL ► SHLEMIEL a fool; a clumsy person; a gullible person; an ineffectual or incompetent person → 1870 sl., chiefly US
► SCHNOOK ► SHNOOK a gullible person → 1948 US sl.
► SCISSORBILL ► SCISSORSBILL a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► SET-UP a gullible person; a dupe → 1930 US sl.
SILLYTONIAN a silly or gullible person → 1707 obs.
► SIMON a silly fellow; a credulous gullible person; a simpleton → 1785 sl.
SIMPLE, THE those who are foolish, stupid, or gullible → 1535
► SIMPLE SIMON a silly fellow; a credulous gullible person; a fool, a simpleton → 1785 sl.
SIMPLETONIAN an unintelligent, foolish, or gullible person → 1652
SLOB a person who is gullible or easily imposed upon → 1810 orig. Ireland
► SNIPE a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► SOFT a gullible person; a dupe → 1942 Amer. sl. (Bk.)
SOFT COP a gullible, well-meaning person → 2001 UK sl.
► SOFTIE ► SOFTY a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► SOFT MARK a gullible person; a dupe → 1845 sl.
SOFT ONE a gullible, easily fooled victim → 1823 UK criminals’ sl.
► SOFT SUGAR a person of wealth who is easily fleeced → 1942 Amer. sl. (Bk.)
SOFT TOMMY a gullible person → 1849 UK tramps’ sl.
► SOFT TOUCH a gullible person, esp. someone easily induced to part with money → 1940 sl.
SOFT ‘UN a gullible person → 1842 US sl.
SPEEWA SPEWAH a gullible person; one who is susceptible to a ‘tale’ → 1904 Aust. sl.
► SPRUCE a gullible person; a dupe → 1929 African-American sl.
► SQUARE APPLE an innocent; a naive, gullible person → 1935 US criminals’ sl.
SQUIB a gullible person, a weakling → 1909 sl.
► STEAMER ► STEAM TUG a gullible person → 1932 rhyming sl. for ‘mug’
► SUCK a gullible person; a dupe → 1942 Amer. sl. (Bk.)
SUCKA a foolish, gullible person → 2001 US sl., deliberate mis-spelling of ‘sucker’
► SUCKER a gullible person; a dupe → 1758 sl.
► SUCKER BAIT a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► SWEENEY a gullible person; a dupe → 1942 Amer. sl. (Bk.)
SWEET PEA a gullible, vulnerable person → 1939 US criminals’ sl.
► SWINDLE FOOD a gullible person; a dupe → 1942 Amer. sl. (Bk.)
► TOMMY TUCKER a gullible person → 1992 UK criminals’ rhyming sl. for’ sucker’ 
TOPPER-TOODLE a gullible fool, especially as prey to crooked gamblers → 1850 UK criminals’ sl.
► TOWN TODDLER a gullible person, subject to confidence tricksters → 1790 UK criminals’ sl.
TOY a gullible person, a fool → 1915 African-American teen sl.
TRICK WILLY a gullible Black man → 1983 African-American sl.
TUG a gullible fool → 1897 Aust. sl.
TWENTY CENTS TWENTY-FIVE-CENTER a gullible person, considered ‘not all there’ → 2001 NZ prison sl.
► UCKERSAY a gullible person; a dupe → 1930 US  Pig Latin for ‘sucker’ 
► UGMAY a ‘sucker’, a dupe, a gullible person; a fool, or a stupid person → 1918 US Pig Latin for ‘mug’
► UM-CHAW a doltish, naive person; a foolish or stupid person; a dupe, a gullible person → 1910 Pig Latin for ‘chump’
► UMPCHAY a doltish, naive person; a foolish or stupid person; a dupe, a gullible person → 1910 Pig Latin for ‘chump’ 
► VERIGREEN a very simple or gullible person → 1854 US sl.
WHITE MOUSE a gullible person → 1900 Aust. sl.
► WOODCOCK a gullible fool; an oaf → 1512 UK sl.
► WRAP-UP a gullible person who has been successfully tricked → 1935 US criminals’ sl.
► YAP an uncultured or unsophisticated person; a gullible person; an easy victim; a dupe → c1894 Eng. dial. & US sl.
► YARD DOG a fool; a gullible person → 1930s African-American sl.
► YOB a fool; a naive, gullible, or unintelligent person → 1886 chiefly Aust. & NZ
► YOKEL a term of contempt for a (stupid or ignorant) countryman or rustic; an uneducated and unsophisticated, gullible person from the countryside; a country bumpkin; a lout; an oaf → 1812 usually derogatory
► YOLD ► YULD a sucker or a dupe; one who is easily fooled; a gullible victim → 1950 US sl.
► YOYO a gullible person; a dupe → 1967 US sl. (Bk.)
► ZAFTY a person very easily imposed upon; a gullible person → 1888 Eng. dial. (Bk.)

PHRASES
I HAVE A BRIDGE TO SELL YOU used to indicate that the speaker believes the person addressed to be very gullible → 1917
I WASN’T MADE WITH A FINGER asserting that one is not naive or gullible → 1974 US sl.
► SEE GREEN IN ONE’S EYE to see signs of inexperience or gullibility → 1859 sl.
STRICTLY FOR THE BIRDS appealing only to gullible people → 1943 orig. US
THERE’S A SUCKER BORN EVERY MINUTE there are many naive or gullible people who are easy to cheat or deceive → 1934
THERE’S ONE BORN EVERY MINUTE there are many naive or gullible people who are easy to cheat or deceive → 1835

VERBS
► BITE to be gullible; to believe a deception; to allow oneself to be tricked → 1949 US sl.
► COME DOWN IN THE LAST SHOWER to be inexperienced, foolish, or gullible; chiefly used in negative contexts → 1843 Aust. & NZ colloq.
► COME THE RAW PRAWN ► COME THE RAW PRAWN OVER to attempt to deceive; to treat as foolish or gullible (usually in negative contexts) → 1942 Aust. colloq.
COME TO TOWN IN A TURNIP TRUCK to be naive, gullible, or unsophisticated → 1991 orig. US
COME UP ON THE LAST LOAD to be naive or gullible → 1995 Ireland
COME UP THE FOYLE IN A BUBBLE to be naive or gullible → 1992 Ireland
COME UP THE RIVER ON A BIKE to be naive or gulllible → 1995 Ireland
FALL OFF A TURNIP TRUCK to be naive, gullible, or unsophisticated → 2017 orig. US
► GREEN to make to appear ‘green’, simple, or gullible; to hoax, to humbug, to take in → 1836 sl.
GUDGEON to make oneself gullible, to become a victim → 1785 UK sl.
HAVE FALLEN OFF A FLITTING to be foolish or gullible → 1992 Eng. dial.
► RAIN DOWN IN THE LAST SHOWER to be inexperienced, foolish, or gullible; chiefly used in negative contexts → 1843 Aust. & NZ colloq.
SEE ANYTHING GREEN IN ONE’S EYE to detect any signs of gullibility in a person → 1838
► SWALLOW to accept gullibly → 1594 sl.
► TAKE A STINK FOR A NOSEGAY to be extremely gullible; to mistake egregiously → 1809 UK sl.
► TAKE A WOODEN NICKEL to accept gullibly; to be swindled → 1915 sl.
► TAKE WOODEN MONEY to accept gullibly; to be swindled → 1915 sl.
► WEAR BUTTONS to be extremely gullible → 1976 US sl.