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say it: KRAY-zee
crazy is an adjective and noun meaning "affected with madness or insanity". It carries 6 recorded senses.
foolish; totally unsound
“a crazy scheme”
“half-baked ideas”
“a screwball proposal without a prayer of working”
colloquialism
possessed by inordinate excitement
“the crowd went crazy”
“was crazy to try his new bicycle”
colloquialism
intensely enthusiastic about or preoccupied with
“crazy about cars and racing”
“they are dotty about each other”
“gaga over the rock group's new album”
colloquialism
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for crazy come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.