craziness

Concise Oxford English Dictionary © 2008 Oxford University Press:
crazy/ˈkreɪzi/

▶adjective (crazier, craziest)

• 1 insane or unbalanced, especially as manifested in wild or aggressive behaviour.

  ■ extremely foolish.

• 2 informal extremely enthusiastic about something.

• 3 appearing absurdly out of place or unlikely: the monument leant at a crazy angle.

• 4 archaic full of cracks or flaws.

▶noun (pl. crazies) chiefly N. Amer. an insane person.

– phrases
like crazy to a great degree.

– derivatives
crazily adverb,
craziness noun.