• Lunatic Definition & Synonyms
- (a.) Affected by lunacy; insane; mad.
- (n.) A person affected by lunacy; an insane person, esp. one who has lucid intervals; a madman; a person of unsound mind.
- (a.) Of or pertaining to, or suitable for, an insane person; evincing lunacy; as, lunatic gibberish; a lunatic asylum.