verb (used with object) Slang.
- to give a deliberately deceptive appearance to; misrepresent; fake.
- British. (in golf) to misplay (a golf ball), especially to misjudge one’s swing so that the club strikes the ground behind the ball before hitting it.
- to steal (cattle).
- (formerly) to alter the brand on (stolen cattle).
- to cheat someone.
- a thick flour pudding, often flavoured with currants, citron, etc, and boiled in a cloth bagplum duff
- up the duff slang pregnant
- slang to change the appearance of or give a false appearance to (old or stolen goods); fake
- Australian slang to steal (cattle), altering the brand
- Also: sclaff golf informal to bungle (a shot) by hitting the ground behind the ball
- British informal bad or useless, as by not working out or operating correctly; duda duff idea; a duff engine
- slang the rump or buttocks
“buttocks, rump,” 1830s, of unknown origin.