Synonyms of crazy in English:


See definition of crazy


1‘all the publicity nearly sent her crazy’


mad, insane, out of one's mind, deranged, demented, not in one's right mind, crazed, lunatic, non compos mentis, unbalanced, unhinged, unstable, disturbed, distracted, mad as a hatter, mad as a March hare, stark mad

British sectionable

informal mental, off one's head, out of one's head, off one's nut, nutty, nutty as a fruitcake, off one's rocker, not right in the head, not quite right in the head, round the bend, raving mad, stark raving mad, stark staring mad, bats, batty, bonkers, cuckoo, loopy, loony, bananas, loco, dippy, screwy, with a screw loose, touched, gaga, doolally, up the pole, not all there, off the wall, out to lunch, not right upstairs, away with the fairies

British informal barmy, crackers, barking, barking mad, round the twist, off one's trolley, as daft as a brush, not the full shilling, one sandwich short of a picnic

North American informal buggy, nutsy, nutso, out of one's tree, meshuga, squirrelly, wacko, gonzo

Australian Canadian NZ informal bushed

Australian informal yarra

NZ informal porangi



2‘children get all sorts of crazy ideas’


absurd, preposterous, ridiculous, ludicrous, farcical, laughable, risible

idiotic, stupid, foolish, foolhardy, unwise, imprudent, ill-conceived, silly, inane, puerile, infantile, fatuous, imbecilic, hare-brained, half-baked

unreasonable, irrational, illogical, nonsensical, pointless, senseless, impracticable, unworkable, unrealistic

outrageous, wild, shocking, astonishing, monstrous

unbelievable, incredible, unthinkable, implausible

peculiar, odd, strange, queer, weird, eccentric, bizarre, fantastic, incongruous, grotesque

informal barmy, daft, potty, cock-eyed

US informal wackadoo, wackadoodle

North American informal crazy-ass



3‘people in Barbados are just crazy about cricket’


very enthusiastic, passionate, fanatical, excited

very keen on, enamoured of, infatuated with, smitten with, devoted to, fond of

informal wild, mad, nutty, nuts, potty, gone on

informal, dated sweet on


apathetic, indifferent


    like crazy

      1‘we are just working like crazy to make what we have efficient’


      energetically, enthusiastically, madly, with a will, for all one is worth, passionately, intensely, ardently, fervently


      like mad, hammer and tongs

      British informal, dated

      like billy-o

      2‘you were driving like crazy when something punctured one of the tyres’


      fast, furiously, as fast as possible, hurriedly, quickly, rapidly, speedily, hastily


      like mad, hammer and tongs, at warp speed