crackbrain
Someone utterly senseless
A crackbrain is a person considered mentally unsound or foolish—someone whose brain seems cracked.
The word is old-fashioned and literary, more likely encountered in Victorian novels than modern speech: The old crackbrain wandered the streets muttering to himself.
Crackbrained serves as the adjective: a crackbrained scheme.
Eccentric individual
- kookEccentric or strange person
- crankRotary operating handle
- crackpotEccentric with strange ideas
- weirdoPeculiar person, dismissively
nonconformist · maverick · bohemian · queer fish · original · character · card · nutcase
Deranged or irrational person
- madmanDangerously unstable person
- simpletonUnintelligent person
- nitwitFoolish, silly person
- dimwitFoolish, slow person
halfwit · blockhead · numskull · dunce · dolt · nincompoop · buffoon · imbecile
Severe mental illness
- lunacyExtreme irrational foolishness
- derangementDisturbed mental state
- deliriumAcute mental disorientation
- maniaIntense, consuming obsession
psychosis · dementia · craziness · unhinged · unbalanced · deranged · demented · touched
No longer in use
- datedOld-fashioned or courted
- antiquatedOld and outdated
- old-fashionedBelonging to earlier times
- quaintAttractively unfamiliar, outdated
historical · Elizabethan · natural · mooncalf · changeling · zany · fool · jester
oddball
Eccentric individual
weirdo · nonconformist · maverick · bohemian · queer fish · original · character · card · nutcase · fruitcake
lunatic
Deranged or irrational person
dimwit · halfwit · blockhead · numskull · dunce · dolt · nincompoop · buffoon · imbecile · idiot
insanity
Severe mental illness
- lunacyExtreme irrational foolishness
- derangementDisturbed mental state
- deliriumAcute mental disorientation
mania · psychosis · dementia · craziness · unhinged · unbalanced · deranged · demented · touched · unglued
obsolete
No longer in use
- datedOld-fashioned or courted
- antiquatedOld and outdated
- old-fashionedBelonging to earlier times
quaint · historical · Elizabethan · natural · mooncalf · changeling · zany · fool · jester · period
crackbrainsage
Wisdom keeper or seasoning
savant · genius · wise man · philosopher · intellectual
crackbrainconformist
One following accepted norms
conformer · follower · sheep · conventionalist · traditionalist
crack, brain, cracked, cracking, cracks, cracker, crackers, brains, brainy