Noun: insanity in'sa-nu-tee
- Relatively permanent disorder of the mind
"he lived on a knife-edge between genius and insanity";
- madness, craziness [informal]
- The quality of being rash and foolish
"trying to drive through a blizzard is the height of insanity";
- folly, foolishness, craziness, madness, nuttiness [informal]
Derived forms: insanities
Type of: daftness [informal], feeblemindedness, mental disease, mental illness, psychopathy, stupidity
Antonym: saneness
Encyclopedia: Insanity