Crazy Definition

krāzē
crazier, crazies, craziest
adjective
crazier, craziest
Having flaws or cracks.
Webster's New World
Departing from proportion or moderation, especially:
American Heritage
Shaky or rickety; unsound.
Webster's New World
Unsound of mind; mentally unbalanced or deranged; psychopathic; insane.
Webster's New World
Of or for an insane person.
Webster's New World
noun
crazies
An eccentric or mentally unbalanced person.
Webster's New World
interjection
Used to express approval, pleasure, wonder, etc.: now rare.
Webster's New World
adverb

(slang) Very, extremely.

That trick was crazy good.
Wiktionary
idiom
like crazy
  • To an exceeding degree:

    They were running around like crazy.

American Heritage
like crazy
  • with great energy, intensity, etc.; without restraint
Webster's New World

Other Word Forms of Crazy

Noun

Singular:
crazy
Plural:
crazies

Adjective

Base Form:
crazy
Comparative:
crazier
Superlative:
craziest

Idioms, Phrasal Verbs Related to Crazy

Origin of Crazy

  • From EtymOnline: 1570s, "diseased, sickly," from craze + -y (2). Meaning "full of cracks or flaws" is from 1580s; that of "of unsound mind, or behaving as so" is from 1610s. Jazz slang sense "cool, exciting" attested by 1927. To drive (someone) crazy is attested by 1873. Phrase crazy like a fox recorded from 1935. Crazy Horse, Teton Lakhota (Siouan) war leader (d.1877) translates thašuka witko, lit. "his horse is crazy."

    From Wiktionary

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