witless (adj.)
- abnormal
- apish
- asinine
- asleep
- batty
- beguiled
- besotted
- brainless
- brainsick
- buffoonish
- cockeyed
- crackbrained
- cracked
- crazed
- crazy
- credulous
- daft
- dazed
- demented
- deranged
- disoriented
- distraught
- dizzy
- doting
- dumb
- empty-headed
- fatuous
- featherbrained
- flaky
- flighty
- fond
- foolish
- frivolous
- fuddled
- futile
- gaga
- giddy
- goofy
- harebrained
- headless
- idiotic
- ignorant
- ill-advised
- ill-considered
- ill-judged
- imbecile
- impolitic
- imprudent
- inadvisable
- inane
- incognizant
- inconsiderate
- indiscreet
- inept
- inexpedient
- infatuated
- injudicious
- insane
- insensate
- insensible
- irrational
- kooky
- loco
- loony
- lunatic
- mad
- maddened
- manic
- maudlin
- mazed
- mental
- mindless
- misguided
- moronic
- myopic
- napping
- nitwitted
- nutty
- odd
- off
- queer
- rattlebrained
- rattlepated
- reasonless
- reckless
- sappy
- scatterbrained
- screwy
- senseless
- sentimental
- shortsighted
- sick
- silly
- strange
- stupid
- thoughtless
- touched
- unadvised
- unaware
- unbalanced
- unconscious
- unconsidered
- undiscerning
- unhearing
- unhinged
- unintelligent
- unknowing
- unmindful
- unperceiving
- unreasonable
- unreasoning
- unreflective
- unseeing
- unsettled
- unsound
- unsuspecting
- untalented
- unthinking
- unthoughtful
- unwise
- unwitting
- wacky
- wandering
- wet
