Entry 2 senses · 2 variants Webster, 1913 fuck · IPA /fʌk/ n. v. t. & i. 01 n. A slang term for sexual intercourse. 1. A slang term for sexual intercourse.[vulgar slang] Syn. fucking, screw, screwing, ass, piece of ass, roll in the hay, shag. 02 v. t. & i. to have sexual intercourse (with). 1. to have sexual intercourse (with).[vulgar slang] Syn. love, make love, sleep with, get laid, have sex, know, do it, be intimate, have intercourse, have it away, have it off, screw, jazz, eff, have, hump, lie with, bed, have a go at it, get it on, bonk.