knuckleheaded
Lacking good sense
Knuckleheaded means stupid or foolish, suggesting someone whose head is as dense as a knuckle bone.
The word describes thoughtless behavior or poor judgment: That was a knuckleheaded move.
It's mildly insulting but often affectionate—the kind of thing you'd call a friend who locked their keys in the car.
Lacking mental acuity
- boneheadedExtremely stupid or foolish
- thick-skulledStubbornly slow to comprehend
- denseClosely packed together
- dopeyStupidly slow, half-asleep
doltish · obtuse · brainless · witless · slow-witted · dim · blockheaded · simple-minded
Extremely stupid or foolish
- imprudentLacking careful forethought
- thoughtlessShowing no consideration
- foolhardyRecklessly bold
- rashHeedless or skin irritation
irresponsible · careless · heedless · ill-advised · unwise · reckless · shortsighted · hasty
Extremely lacking intelligence
- moronicExtremely foolish or senseless
- asinineExtremely foolish or stupid
- harebrainedRecklessly stupid or impractical
- ridiculousInviting scorn through absurdity
absurd · senseless · nonsensical · imbecilic · inane · ludicrous · preposterous · cockamamie
Stubbornly refusing to yield
- pigheadedStubbornly refusing to yield
- hardheadedStubbornly unyielding or practical
- obstinateFirmly refusing to yield
- mulishStubbornly refusing to yield
headstrong · thickheaded · wrongheaded · intransigent · willful · unyielding · inflexible · unbending
dimwitted
Lacking mental acuity
- boneheadedExtremely stupid or foolish
- thick-skulledStubbornly slow to comprehend
- denseClosely packed together
dopey · doltish · obtuse · brainless · witless · slow-witted · dim · blockheaded · simple-minded · thick
boneheaded
Extremely stupid or foolish
- imprudentLacking careful forethought
- thoughtlessShowing no consideration
- foolhardyRecklessly bold
rash · irresponsible · careless · heedless · ill-advised · unwise · reckless · shortsighted · hasty · impetuous
idiotic
Extremely lacking intelligence
- moronicExtremely foolish or senseless
- asinineExtremely foolish or stupid
- harebrainedRecklessly stupid or impractical
ridiculous · absurd · senseless · nonsensical · imbecilic · inane · ludicrous · preposterous · cockamamie · daft
bullheaded
Stubbornly refusing to yield
- pigheadedStubbornly refusing to yield
- hardheadedStubbornly unyielding or practical
- obstinateFirmly refusing to yield
mulish · headstrong · thickheaded · wrongheaded · intransigent · willful · unyielding · inflexible · unbending · dogged