Open English Wordnet
Nouns
(n)buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, assthe fleshy part of the human body that you sit on“he deserves a good kick in the butt”, “are you going to sit on your fanny and do nothing?”
Verbs
(v)displace, fire, give notice, can, dismiss, give the axe, send away, sack, force out, give the sack, terminateterminate the employment of; discharge from an office or position“The boss fired his secretary today”, “The company terminated 25% of its workers”