Fuck  coarse slang —v. 1 (often absol. Or as int. Expressing annoyance) curse (a person or thing). 2 have sexual intercourse (with). 3 (foll. By about, around) mess about; fool around. 4 (as fucking adj., adv.) Expressing annoyance etc. —n. 1 a act of sexual intercourse. B partner in this. 2 slightest amount (don't give a fuck).  fuck-all nothing. Fuck off go away. Fuck up 1 bungle. 2 disturb emotionally.  fucker n. (often as a term of abuse). [origin unknown]