The state of being mad; insanity; mental disease. / The state of being angry. / rash folly

Insane; crazy, mentally deranged. / (chiefly US; informal in UK) Angry, annoyed. / (chiefly in the negative, informal) Used litotically to indicate satisfaction or approval.

(obsolete, intransitive) To be or become mad. / (now colloquial US, Jamaica) To madden, to anger, to frustrate.

(UK, informal) Exceedingly eager, or having a keen desire or appetite for something. Particularly associated with and originally from the Madchester Era.

A state of anger and resentment toward someone or something.

Alternative form of mad on

(genetics) Acronym of mothers against decapentaplegic.

plural of MAD

(intransitive) To become insane. / (intransitive, informal, typically followed by "and" and a second verb) To do something extravagant.

(slang) Demented, crazy.