thoughtless
Without regard shown
Thoughtless describes acting without consideration for others or without thinking ahead.
A thoughtless remark hurts someone's feelings unintentionally.
A thoughtless decision ignores consequences.
The word implies carelessness rather than malice—the person simply didn't pause to think: It was thoughtless of me not to call.
Thoughtless can also mean empty-headed or vacuous, though this sense is less common.
Heedless or skin irritation
- recklessCarelessly ignoring danger
- impetuousActing on sudden urge
- hastyExcessively quick, ill-considered
- unthinkingLacking conscious thought
heedless · brash · foolhardy · precipitous · hotheaded · snap · knee-jerk · spur-of-the-moment
Careless of consequences
- inattentiveNot paying attention
- unmindfulLacking awareness or attention
- negligentFailing in due care
- neglectfulFailing to care properly
remiss · lax · sloppy · slipshod · perfunctory · unobservant · oblivious · inadvertent
Concerned only with oneself
- uncaringLacking emotional concern
- unkindLacking sympathy or consideration
- insensitiveUnaware of others' emotions
- disregardfulIgnoring with intent
unfeeling · cold · heartless · unsympathetic · indifferent · dismissive · callous · self-centered
Occurring by chance
- inadvertentDone without intention
- unintendedNot done on purpose
- unwittingNot aware or conscious
- unconsciousNot awake or aware
unplanned · unpremeditated · involuntary · instinctive · automatic · reflexive · mechanical · undeliberate
rash
Heedless or skin irritation
- recklessCarelessly ignoring danger
- impetuousActing on sudden urge
- hastyExcessively quick, ill-considered
unthinking · heedless · brash · foolhardy · precipitous · hotheaded · snap · knee-jerk · spur-of-the-moment · devil-may-care
heedless
Careless of consequences
- inattentiveNot paying attention
- unmindfulLacking awareness or attention
- negligentFailing in due care
neglectful · remiss · lax · sloppy · slipshod · perfunctory · unobservant · oblivious · inadvertent · forgetful
selfish
Concerned only with oneself
- uncaringLacking emotional concern
- unkindLacking sympathy or consideration
- insensitiveUnaware of others' emotions
disregardful · unfeeling · cold · heartless · unsympathetic · indifferent · dismissive · callous · self-centered · self-absorbed
accidental
Occurring by chance
- inadvertentDone without intention
- unintendedNot done on purpose
- unwittingNot aware or conscious
unconscious · unplanned · unpremeditated · involuntary · instinctive · automatic · reflexive · mechanical · undeliberate · unbidden
- thoughtlessunthinking, mindless, unreflective, unconsidered, unexamined
- negative adjectivesawful, bad, cruel, dumb, evil
- recklessreckless, careless, rash, heedless, imprudent
- accidentsaccident, car accident, bike accident, mishap, traffic accident
- selfish traitsselfish, greedy, self-centered, self-absorbed, egotistical
- Smartsintelligent, genius, smart, gifted, brilliant
thoughtlessthoughtful
Showing careful consideration
considerate · kind · attentive · caring · courteous
thoughtlessdeliberate
Consciously chosen, not accidental
careful · thoughtful · prudent · reflective · considered