crazy

/ˈkreɪzi/

/ˈkreɪzi/

Other forms: craziest; crazier; crazies

Use the adjective crazy to describe actions that aren't sensible, like the crazy way your brothers run around the house when their favorite team wins a game.

Crazy can also mean "insane," though in today's world, it is offensive to apply it to those who struggle with mental illness. Instead, stick with using crazy to describe temporary and more light-hearted situations like being crazy about a new boyfriend or girlfriend or going "football crazy" during the Super Bowl.

Definitions of crazy

1. adjective

   affected with madness or insanity
   synonyms: brainsick, demented, disturbed, mad, sick, unbalanced, unhinged

   insane

   afflicted with or characteristic of mental derangement
2. adjective

   foolish; totally unsound
   “a crazy scheme”

   synonyms: half-baked, screwball, softheaded

   impractical

   not practical; not workable or not given to practical matters
3. noun

   someone deranged and possibly dangerous
   synonyms: looney, loony, nutcase, weirdo

   type of:

   lunatic, madman, maniac

   an insane person
4. adjective

   intensely enthusiastic about or preoccupied with
   “crazy about cars and racing”

   synonyms: dotty, gaga, wild

   enthused, enthusiastic, keen

   having or showing great excitement and interest
5. adjective

   possessed by inordinate excitement
   “the crowd went crazy”

   “was crazy to try his new bicycle”

   synonyms:

   excited

   in an aroused state
6. adjective

   bizarre or fantastic
   “had a crazy dream”

   “wore a crazy hat”

   synonyms:

   strange, unusual

   being definitely out of the ordinary and unexpected; slightly odd or even a bit weird