nutter
British slang: madman
Nutter is British slang for a crazy or eccentric person, someone whose behavior seems unhinged or unpredictable.
It can be used affectionately among friends or dismissively about strangers: Some nutter on the bus wouldn't stop talking to himself.
The term derives from nuts, meaning crazy, and carries similar connotations—it's informal and mildly insulting rather than a clinical designation of mental illness.
Mentally unhinged
crackpot · weirdo · oddball · fruitcake · whacko · kook · screwball · head case
Of the United Kingdom
- slangInformal in-group vocabulary
- informalRelaxed, not official
- colloquialCasual, everyday language
- matePartner or companion
bloke · blimey · bloody · daft · barmy · berk · git · tosser
Eccentric individual
- eccentricUnconventional in character
- characterNature, symbol, or role
- nonconformistRejects prevailing social standards
- maverickIndependent-minded rule-breaker
bohemian · individualist · original · quirky · unconventional · idiosyncratic · peculiar · offbeat
crazy
Mentally unhinged
mental · crackpot · weirdo · oddball · fruitcake · whacko · kook · screwball · head case · loose cannon
British
Of the United Kingdom
- slangInformal in-group vocabulary
- informalRelaxed, not official
- colloquialCasual, everyday language
mate · bloke · blimey · bloody · daft · barmy · berk · git · tosser · wally
oddball
Eccentric individual
- eccentricUnconventional in character
- characterNature, symbol, or role
- nonconformistRejects prevailing social standards
maverick · bohemian · individualist · original · quirky · unconventional · idiosyncratic · peculiar · offbeat · free spirit
fanatic
Overly zealous person
- enthusiastArdent admirer of something
- zealotObsessive cause supporter
- obsessiveConsumed by fixation
maniac · fiend · devotee · addict · buff · aficionado · extremist · die-hard · ultra · true believer
nuttersound mind
Mental clarity and stability
reasonable person · moderate · pragmatist · realist · cool head
nutterconformist
One following accepted norms
conformer · sheep · follower · traditionalist · normie
- nutty as a fruitcakeExtremely eccentric or insane
- nutty as a fruit cakeExtremely crazy or eccentric
- nutty flavorTaste like almonds
- Nutter ButterPeanut-shaped peanut butter cookie