brainless
Lacking all sense
Brainless means lacking intelligence or common sense—stupid, foolish.
The word is hyperbolic; those described as brainless do have brains, just not ones they're using well: a brainless decision, some brainless bureaucrat lost my paperwork.
Brainless entertainment requires no mental effort to enjoy.
Extremely lacking intelligence
- senselessLacking reason or awareness
- stupidLacking intelligence or judgment
- dumbWitless or mute
- sillyFrivolous or absurd
inane · absurd · asinine · unwise · irrational · imprudent · thoughtless · reckless
Lacking sense or intelligence
void · vacant · airheaded · shallow · superficial · insipid · jejune · unintelligent
Lacking knowledge of something
- heedlessCareless of consequences
- inattentiveNot paying attention
- unmindfulLacking awareness or attention
- cluelessLacking any understanding
unseeing · blind · deaf · careless · negligent · incautious · unwary · unobservant
Lacking conscious thought
- automaticOperating without intervention
- mechanicalOperated by machinery
- roboticStiff and unemotional
- zombie-likeResembling reanimated dead
autopilot · reflexive · instinctive · rote · drone · thoughtless · unreflecting · knee-jerk
Lacking necessary knowledge
- unschooledLacking formal instruction
- unlearnedLacking acquired knowledge
- untutoredWithout formal instruction
- uneducatedLacking formal instruction
unknowing · benighted · illiterate · unread · clueless · uninstructed · naive · unsophisticated
idiotic
Extremely lacking intelligence
silly · inane · absurd · asinine · unwise · irrational · imprudent · thoughtless · reckless · harebrained
empty-headed
Lacking sense or intelligence
blank · void · vacant · airheaded · shallow · superficial · insipid · jejune · unintelligent · dull-witted
unaware
Lacking knowledge of something
- heedlessCareless of consequences
- inattentiveNot paying attention
- unmindfulLacking awareness or attention
clueless · unseeing · blind · deaf · careless · negligent · incautious · unwary · unobservant · distracted
unthinking
Lacking conscious thought
- automaticOperating without intervention
- mechanicalOperated by machinery
- roboticStiff and unemotional
zombie-like · autopilot · reflexive · instinctive · rote · drone · thoughtless · unreflecting · knee-jerk · programmed
uninformed
Lacking necessary knowledge
- unschooledLacking formal instruction
- unlearnedLacking acquired knowledge
- untutoredWithout formal instruction
uneducated · unknowing · benighted · illiterate · unread · clueless · uninstructed · naive · unsophisticated · unworldly
- dimwitsdimwit, idiot, dolt, dunce, moron
- foolishfoolish, stupid, dumb, witless, senseless
- foolishnessfoolishness, silliness, foolish, stupid, folly
- mindlessmindless, witless, senseless, unthinking, empty-headed
- Smartsintelligent, genius, smart, gifted, brilliant
- negative adjectivesawful, bad, cruel, dumb, evil
brainlessthoughtful
Showing careful consideration
reflective · deliberate · contemplative · considered · mindful