безумный

1) General subject: absurd, agonized, crazed, crazy, daft, delirious, distracted, frantic, insane, lunatic, mad, madding, madman, nonsensical, off one's head, phrenetic, rabid, rash, unglued, unsane, vehement, wild, witless, doolally tap (to 'lose ones mind', derived from the boredom felt at the Deolali British Army transit camp. 'Tap' may refer to the Urdu word tap a malarial fever, therefore doolally tap refers to 'camp fever'), gone doolally, barmy, lost your mind, lost (one's) mind, lost your marbles, one short of a dozen, crackpot, wacky, barking mad, fruit cake, off (one's) rocker, balmy, off-the-wall

2) American: fool, gonzo

3) Australian slang: loony, loopy, mad as a cut snake, mad as a meat axe, off (one's) block, off (one's) onion, off (one's) trolley, off the air, round the bend, wacko

4) Scottish language: furious

5) Jargon: bananas, cock-eyed, cockeyed, daffy, dippy, locoed, loose in the bean (в прямом и переносном смыслах), loose in the upper storey (в прямом и переносном смыслах), nutty, off (one's) chump, squirrelly, unscrewed, unzipped, zonkers, cockamamie (What a cockamamie idea! Что за безумная идея!), narly, in a tizzy, meshugah, out of one's head, nothing upstairs, bonkers, loco, off (one's) nut, pixilated

6) Makarov: crazy (о замысле и т.п.), not right in the head

7) Archaic: distraught

8) Taboo: doolally, nuts