• FLAB
n. 1958 – fatness (sl.)
• FLABBERDEGASKY
vb. 1822 – to astonish greatly; to confound, to flabbergast (obs.)
• FLABBERDEGAZ
n. Bk1942 – nonsense (Amer. sl.)
• FLABBERGAST
vb. 1772 – to astound; to surprise
• FLABBERGASTED
adj. Bk1942 – bewildered; confused; disconcerted (Amer. sl.)
• FLACK
n. 1939 – a publicity agent (sl., orig. US)
• FLADGE • FLADJ
n. 1958 – flagellation as a means of sexual gratification, and also pornographic literature concentrating on flagellation (sl.)
• FLADGES
n. 19C – snowflakes (Eng. dial.)
• FLAG
n. 1. 1851 – an apron; hence a badge of office or trade (sl.)
n. 2. Bk1893 – the ‘menstrual cloth’ (sl.)
n. 3. Bk1903 – fourpence (sl.)
• FLAG-ABOUT
n. Bk1893 – a strumpet (sl.)
• FLAG AWAY
vb. 20C – to consider unimportant; to brush aside (NZ)
• FLAG BY
vb. 20C – to consider unimportant; to brush aside (NZ)
• FLAGE
n. 1958 – flagellation as a means of sexual gratification, and also pornographic literature concentrating on flagellation (sl.)
• FLAGELLATE
vb. 1623 – to whip, scourge, flog
• FLAGELLOMANIA
n. 1895 – enthusiasm for whipping or being whipped
• FLAGELLOMANIAC
adj. 1895 – enthusiastic about or deriving (sexual) pleasure from whipping or being whipped
n. 1899 – a person who is enthusiastic about or derives (sexual) pleasure from whipping or being whipped
• FLAGGER
n. 1865 – a street-walker (sl.)
• FLAGGY
adj. 1576 – drooping; limp (obs.)
• THE FLAG IS UP
phr. Bk1893 – the ‘menstrual flux is on’ (sl.)
• FLAGITIOUS
adj. 14C – atrociously wicked; vicious; outrageous
• FLAG OF DEFIANCE
n. Bk1893 – a drunken roisterer (sl.)
• FLAG OF DISTRESS
n. Bk1893 – a flying shirt-tail (sl.)
• FLAGS
n. 1. 1575 – the long feathers on the leg of a hawk or falcon
n. 2. Bk1913-17 – a signal quartermaster (Amer. navy sl.)
• FLAG UNFURLED
n. Bk1893 – a man of the world (rhyming sl.)
• FLAG-WAVING
n. 20C – an emotional appeal or display intended to arouse patriotic or nationalistic feeling (colloq.)
• FLAIL
vb. 20C – to do poorly on or fail a test; to mess up (teen & high school sl.)
• FLAK
n. 1. 1968 – adverse criticism (sl., orig. US)
n. 2. Bk1998 – a public relations person (sl.)
• FLAKE
n. 1959 – a crazy, eccentric, or unreliable person (sl., chiefly US)
vb. 20C – to miss an appointment or not show for a date (teen & high school sl.)
• FLAKED OUT
adj. 1950s – tired (Amer. sl.)
• FLAKE OUT
vb. 1942 – to collapse or fall asleep as through extreme exhaustion; to become unconscious (sl.)
• FLAKEY
adj. 1953 – crazy, eccentric (sl., orig. US)
• FLAK HAPPY
adj. 1940s – slap-happy; slightly muddled mentally (Amer. sl.)
• FLAKIES
n. 20C – dandruff (colloq.)
• FLAKY
adj. 1953 – crazy, eccentric (sl., orig. US)
• FLAM
adj. 1692 – false (sl.)
n. 1. 1598 – nonsense; humbug; flattery; a lie; deception; a sham (sl.)
n. 2. 1785 – a single stroke on the drum (sl.)
vb. Bk1893 – to flatter; to lie; to take in; to cheat or deceive (colloq.)
• FLAMATIOUS
adj. 1688 – burning hot (obs.)
• FLAMBERGAST
vb. 1869 – to amaze, astonish, bewilder, perplex; to take by surprise (Eng. & Amer. dial.)
• FLAMBLE
vb. 1557 – to be in flames, to flame (obs.)
• FLAMBUGINOUS
adj. 1813 – of the nature of a ‘flam’; nonsensical, sham (rare)
• FLAMBUSTERED
adj. 19C – excited, agitated (Eng. dial.)
• FLAMBUSTIOUS
adj. 1. 1868 – gaudy, showy (Amer. sl.)
adj. 2. 1868 – of enjoyment: good, pleasant (Amer. sl.)
• FLAMDOODLE
n. 1833 – nonsense; vain boasting; empty talk (Amer. sl.)
• FLAME
int. 20C – an expletive; hell!
n. 1. E18 – a sweetheart, a mistress in keeping (sl.)
n. 2. 1859 – a venereal disease (sl.)
n. 3. 1940s – a blatantly homosexual man (US sl.)
n. 4. 20C – an abusive message posted online or sent by electronic mail, esp. to express anger or criticism (colloq.)
vb. 1. 20C – to show great emotion; to become angry or excited
vb. 2. 20C – to post an abusive comment online or send an abusive email (colloq.)
• FLAME ARTIST
n. 1940s – a blatantly homosexual man (US sl.)
• FLAMEOUT
n. 20C – a complete failure (sl.)
• FLAMER
n. 1. L17 – an admirer, a lover, a promiscuous woman (sl.)
n. 2. c1805 – a conspicuous, ostentatious person who ‘burns brightly’; someone or something very unusual or vigorous
n. 3. c1805 – a stiff criticism; a row; a quarrel
n. 4. 1840 – a man, woman, thing, or incident above the common (sl.)
n. 5. E19 – a redhead (sl.)
n. 6. L19 – a safety match burning with notably bright flame (sl.)
n. 7. L19 – an enthusiast; a success with the female sex, a lady’s man (sl.)
n. 8. 1916 – an aircraft coming down in flames (Royal Air Force usage)
n. 9. 1930s – a clumsy, embarrassing, or highly unpleasant person (sl.)
n. 10. 1940s – a blatantly homosexual man (US sl.)
n. 11. 1960s – anyone who commits a major social error; thus the error itself (sl.)
n. 12. 1990s – a gun (African-American sl.)
• FLAMERS
n. c1885 – safety-matches giving a bright flame (sl.)
• FLAME THROWER
n. 1940s – a blatantly homosexual man (US sl.)
• FLAMES
n. 1823 – a red-haired person; also, a term of address (colloq.)
► FLAMFEW n. a gaudy ornament; a dazzling trifle; a gewgaw; something pretty and of little value → 1574
► FLAMFOO n. any gaudy trapping in female dress; a gaudily-dressed female → 1825 Sc.
• FLAMIGIGS
n. Bk1913-17 – airs and graces; affectations (Amer. dial.)
• FLAMIN’
adj. 20C – infatuated, mad (teen & high school sl.)
• FLAMING
adj. 1. 1738 – excessively noticeable, flagrant, monstrous; conspicuous (sl.)
adj. 2. 1887 – of tobacco: very strong (sl.)
adj. 3. 1895 – an intensifier (UK sl.)
adj. 4. 1941 – ostentatiously homosexual (US homosexual sl.)
adj. 5. 1990s – sexy (US students’ sl.)
adj. 6. 20C – vehement; passionate
adj. 7. 2000s – drunk (Irish sl.)
adv. 1895 – an intensifier (UK sl.)
n. 1. 1950s – speaking incessantly and obsessive on a particular topic of little interest to anyone but oneself (sl.)
n. 2. 1980s – using ‘bulletin boards’ and other communications links to circulate obscene messages, pictures, etc. (sl.)
• FLAMING ARSEHOLE
n. 1942 – a large red circle painted on side of Japanese aircraft (Aust. airmen’s usage)
• FLAMING ASSHOLE
n. 1968 – a truly despicable person (US sl.)
• FLAMING COFFIN
n. 1. 1910s – an airplane falling in flames (Amer. sl.)
n. 2. 1919 – a DH-4 bomber aircraft (US sl.)
• FLAMING END
n. 1983 – a remarkable and pleasing thing or person (UK sl.)
• FLAMING FURY
n. 1960 – a toilet built over a deep pit in the ground, the contents of which are periodically set alight (Aust. sl.)
• FLAMING HELL!
int. c1925 – an expletive; hell! used for expressing surprise, anger, amazement, etc.
• FLAMING NORA!
int. 1979 – used for expressing surprise, anger, amazement, etc. (UK euphemism)
• FLAMINGO
n. c1910 – an inhabitant of Flanders
• FLAMING ONIONS
n. 1917 – a projectile consisting of about ten incendiary shells shot upwards in quick succession (sl.)
• FLAMING WELL
adv. 1955 – damned well (Aust. sl.)
• FLAMMIVOMOUS
adj. 1663-76 – vomiting or belching flames of fire, as a volcano (rare.)
• FLAMMULE
n. Bk1897 – a small flame
• FLAMP
vb. 1. L19 – to sell Army property illegally (army sl.)
vb. 2. c1937 – to flatter; to wheedle (Royal Air Force usage)
• FLAM-SAUCE
n. 1833 – transparent nonsense (sl.)
• FLAN
n. 20C – red tape (Royal Navy usage)
• FLANAGAN (AND ALLEN)
n. 1992 – a gallon (of motor fuel) (UK rhyming sl.)
• FLANDERKIN
adj. 1694 – Flemish (obs.)
n. 1. 1690 – a very large fat man or horse (sl.)
n. 2. 1698 – an inhabitant of Flanders (obs.)
• FLANDERS EARTH
n. 1910s – mud (army sl.)
• FLANDERS FORTUNE
n. L17 – a relatively small fortune or inheritance (sl.)
• FLANDERS PIECE
n. 1690 – a painting that looks good from a distance but not so good close to (sl.)
• FLANDERS RECKONING
n. E17 – spending money in a place that has no links to the place where one received the money (sl.)
• FLANE
vb. 1876 – to walk idly; to saunter
• FLANGE
n. 1. 1960s – the head of the penis (sl.)
n. 2. 1985 – the outer lips of the vagina (Aust. sl.)
n. 3. 1996 – the vagina (sl., orig. US)
vb. 2002 – to walk along (UK sl.)
• FLANGEHEAD
n. 1949 – a nickname for an East Asian; a Chinese person (sl., derogatory)
• FLANGER
n. 1957 – in target shooting: a shot that strikes outside a close group of shots on the target (US sl.)
• FLANK
vb. 1. 1830 – to crack a whip; also, to hit a mark with the lash of one (sl.)
vb. 2. M19 – to dodge, to evade (US sl., orig. military usage)
vb. 3. M19 – to trick out of (US sl., orig. military usage)
• FLANKARD
n. 16C – a venereal sore (sl.)
• FLANKER
n. 1. M19 – a blow; a punch; a retort; a kick (sl.)
n. 2. M19 – a verbal response (sl.)
n. 3. 1923 – a trick or swindle, a hoax (Brit. sl., orig. services’ usage)
n. 4. 1940s – a tall person (Amer. sl.)
• FLANKEY
n. 1848 – the posteriors (sl.)
• FLANNEL
n. 1. E19 – grog, punch, or gin-twist with a dash of beer (sl.)
n. 2. 1927 – insincere or exaggerated talk intended to flatter or deceive; indirect or evasive talk; deceiving flattery, humbug, rubbish, nonsense (Brit. sl.)
vb. 1941 – to talk evasively to; to flatter; to deceive with insincere or flattering talk (Brit, sl.)
• FLANNEL BACK
n. L19 – a navvy, who wears such a garment (sl.)
• FLANNEL EARS
n. Bk1942 – deaf ears (Amer. sl.)
• FLANNEL-JACKET
n. L19 – a navvy, who wears such a garment (sl.)
• FLANNELLED FOOL
n. 20C – a cricketer (derogatory)
• FLANNEL-MOUTH
n. 1881 – a flatterer; an exaggerated talker (US sl.)
• FLANNELMOUTHED
adj. 1. 1973 – speaking indistinctly and in a muffled way (US)
adj. 2. 1973 – speaking too loudly or too much, often talking nonsense (US)
• FLANNEL PANEL
n. 2002 – in a magazine: a list of who did what in that edition (UK sl.)
• FLANNIE
• FLANNY
n. 1996 – a shirt made of flannel or flannelette (Aust. sl.)
• FLANNO
adj. 1987 – made from flannelette (Aust. sl.)
n. 1996 – a shirt made of flannel or flannelette (Aust. sl.)
• FLANTITANTING
adj. 1596 – flaunting → obs.
• FLANTUM-FLATHERUM PIEBALD DILL
n. B1900 – a woman fantastically dressed in a variety of colours (Eng. dial.)
• FLAP
n. 1. 1539 – a blow (sl.)
n. 2. 1916 – a state of panic, distress, agitation or restlessness; a disturbance or crisis (sl.)
n. 3. Bk1942 – a giddy girl (Amer. students’ sl.)
n. 4. 1955 – a cheque (Aust. prison & criminals’ sl.)
n. 5. 1960 – the mouth (Aust. sl.)
n. 6. 1977 – an ear (Amer. sl.)
n. 7. 1992 – strands of hair that a semi-bald man may cultivate and style to lay over his naked pate (UK sl.)
vb. 1. Bk1893 – to pay, to fork out (sl.)
vb. 2. Bk1893 – to possess a woman carnally (sl.)
vb. 3. Bk1893 – to rob; to swindle (thieves’ sl.)
vb. 4. 1912 – to be or become agitated or flustered; to panic (sl.)
vb. 5. 20C – to toss, fling, slam, etc., abruptly or noisily
• FLAPADOSHA
adj. 19C – showy; eccentric (Eng. dial.)
n. 19C – an eccentric, showy person with superficial manners (Eng. dial.)
• FLAP A JAY
vb. 1885 – to swindle a greenhorn; to dupe (sl.)
• FLAPDOODLE
n. 1. 1833 – transparent nonsense; empty talk (sl.)
n. 2. Bk1893 – the penis (sl.)
• FLAPDOODLER
n. Bk1893 – a braggart agitator (Amer. sl.)
• FLAP-DRAGON
n. 1690 – the pox or ‘clap’ (sl.)
• FLAPJACKED
adj. 2002 – drunk (US sl.)
• FLAPJAW
n. 1950 – a person who talks incessantly (US sl.)
• FLAPMAN
n. Bk1893 – a convict promoted for good behaviour to first or second class (prison sl.)
• FLAPPABLE
adj. 20C – easily upset or agitated (colloq.)
• FLAPPER
n. 1. 1833 – the hand (sl.)
n. 2. Bk1893 – a fledgling wild duck (sl.)
n. 3. Bk1893 – a little girl (sl.)
n. 4. Bk1893 – a very young prostitute (sl.)
n. 5. Bk1893 – the penis (sl.)
n. 6. 1933 – the ear (US sl.)
n. 7. Bk1942 – a giddy girl (US students’ sl.)
n. 8. 1976 – a radio antenna (US sl.)
• FLAPPERESE
n. Bk1942 – slang of the 1920s (Amer. sl.)
• FLAPPERETTE
n. Bk1942 – a giddy girl (US students’ sl.)
• FLAPPERITIS
n. Bk1942 – fondness for girls (Amer. sl.)
• FLAPPEROO
n. Bk1942 – a giddy girl (US students’ sl.)
• FLAPPERS
n. Bk1942 – the ears (Amer. sl.)
• FLAPPER-SHAKER
n. 1833 – the hand (sl.)
• FLAPPER-SHAKING
n. 1853 – hand-shaking (sl.)
• FLAPPER STEAK
n. 1947 – a pig’s ear sandwich (US sl.)
• FLAPPER TRACK
n. 1977 – an unofficial greyhound race track often used so that dogs could get a ‘kill’ to sharpen their appetites before an official race (Ireland)
• FLAPPING TRACK
n. 1977 – a small, unlicensed dog racing track (UK sl.)
• FLAPPY
adj. 1. 1846 – giddy, unsteady (Eng. dial.)
adj. 2. 1905 – loose; flapping
• FLAPPY FEMME
n. Bk1942 – a giddy girl (US students’ sl.)
• FLAPPY-TONGUE
n. 19C – one whose word cannot be relied on (Eng. dial.)
• FLAPS
n. 1. 1972 – the female breasts (US sl.)
n. 2. 2002 – the vaginal lips (UK sl.)
• FLAP-SAUCE
n. 1. 1540 – a glutton → obs.
n. 2. 1833 – transparent nonsense → sl.
• FLAP THE DIMMOCK
vb. 1893 – to pay → sl. (Bk.)
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Updated: February 27, 2023