Synonyms of madman

nounA man who is insane or mentally disturbed.

• basket case
• basket weaver Australia
• crack
• crackpot
• crazy
• crazyheadA crazy person; an eccentric.
• dingbat Australia, US
• eccentric euphemistic
• fruit and nut case Australia, UK
• fruit cake
• fruit loop Australia, USA gayborhood area of Las Vegas.
• fruitloop Australia, USA crazy person; a lunatic.
• head caseUsed other than figuratively or idiomatically: see head, case.
• kook
• loonyAn insane or very foolish person.
• loony tuneA silly or crazy person; a person whose actions are unpredictable and irrational.
• lunaticAn insane person.
• madheadA crazy person.
• mental caseAn insane person; a nutcase.
• nut
• nut ball
• nutbarA crazy, eccentric person.
• nutburger
• nutcase
• nutjob
• nutter
• psycho
• psychoceramicA crackpot.
• schizo
• screwball
• space cadet
• space pilot Australia
• unconventional euphemisticSomething or someone that is unconventional.
• wackadooA crazy person; wacko.
• wackadoodleA crazy, irrational, or eccentric person.
• wackoAn amusingly eccentric or irrational person.
• whackjobA crazy, possibly dangerous, person.
• whacko
• weirdo
• wingnut
• space caseAn insane or eccentric person who has little grip on reality.
• madcap obsolete, rareAn insane person; a lunatic.