Synonyms of barking mad

adjectiveCompletely insane.

• three stops short of DagenhamCrazy; mad.
• 5150 US, slangOf such an unsound mind that one should be involuntarily confined.
• bananasCrazy, mad, nuts.
• barking
• buggishCrazy.
• buggy slang
• bughouse slangCrazy, insane.
• barmyCrazy, mad; also, eccentric, odd, strange.
• batchy BritishOf unsound mind, crazy; lacking good sense or judgment, silly.
• batpoopToo irrational to be dealt with sanely.
• batsMad, insane.
• batty
• bonkersMad; crazy.
• bread baskets British
• crackedCrazy; crackpot.
• crackersCrazy, insane.
• cra-cra slang
• cray slangCrazy.
• cray-cray slangCrazy.
• crazed
• crazyOf unsound mind; insane; demented.
• crazy as a bedbugUtterly mad; insane.
• crazy as a cootieCompletely crazy; insane.
• crazy as a cootie bugCompletely crazy; insane.
• crazy as a pet coonDemented or crazy.
• cuckooCrazy; not sane.
• daffySomewhat mad or eccentric.
• daftCrazy, insane, mad.
• demented
• derangedInsane.
• distraughtMad; insane.
• disturbed
• doolally BritishEccentric; insane, mad.
• dotty
• eccentric
• fruit loopsCrazy; deranged; fruity.
• gaga
• hatstandCrazy, insane.
• harebrained
• insane
• kooky
• loon
• loco
• loony
• loony tunesInsane; crazy.
• loopy
• lunatic
• madInsane; crazy; mentally deranged.
• mental
• mentally illHaving a psychological disorder.
• meshigener
• meshuggeCrazy, mad, senseless, insane.
• nertsCrazy; nuts.
• non compos mentis literaryInsane; not of sound mind; not in control of oneself.
• nonsane
• nucking futs euphemistic, humorousFucking nuts; completely insane.
• nut jobSomeone who is crazy (insane).
• nutballsCrazy, insane, unhinged.
• nut
• nuts
• nutso
• nuttyBarmy: eccentric, odd; crazy, mad, insane.
• nutter
• off the beamCrazy; insane.
• off the chain
• over the edgeInsane, having lost control.
• potty
• psychoPsychotic, psychopathic, or (broadly) otherwise insane.
• psychoceramicCrackpot.
• psychotic
• sickoCharacterized by depraved tastes or habits; deviant.
• screwyCrazy; silly; ridiculous.
• squirrellyEccentric.
• starkers British
• tonto BritishSynonym of crazy.
• unbalanced
• unsane
• wackadoodleCrazy, irrational, or eccentric.
• weirdHaving an unusually strange character or behaviour.
• whackjobA crazy, possibly dangerous, person.
• whacko
• whacky
• wodeMad, angry, crazy, insane, possessed, rabid, furious, frantic.
• yampy BritishBarmy; mad; daft.
• zany euphemistic
• apeshit
• batcrapToo irrational to be dealt with sanely.
• batshitExtremely irrational or unreasonable, insane, crazy.
• bat-shit
• fucked in the headNot right mentally: perverted, stupid, or mentally ill.
• fucked up
• ripshit
• moonsick obsoleteInsane or emotionally deranged, either temporarily or permanently.