Synonyms of crazy in English:


See US English definition of crazy

See UK English definition of crazy

See Spanish definition of loco


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, bats, bonkers, cuckoo, loopy, loony, bananas, loco, dippy, screwy, with a screw loose, touched, gaga, not all there, off the wall, out to lunch, not right upstairs
British informal barmy, batty, crackers, barking, barking mad, stark staring mad, doolally, round the twist, off one's trolley, as daft as a brush, not the full shilling, one sandwich short of a picnic, up the pole, away with the fairies
North American informal buggy, nutsy, nutso, out of one's tree, meshuga, squirrelly, wacko, gonzo
Canadian, Australian, New Zealand informal bushed
Australian informal yarra
New Zealand 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 cock-eyed
British informal barmy, daft, potty
North American informal crazy-ass
US informal wackadoo, wackadoodle


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, gone on
British informal potty
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
    informal 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
    informal like mad, hammer and tongs, at warp speed