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Definitions

thoughtless

[thawt-lis] / ˈθɔt lɪs /
ADJECTIVE
inconsiderate
Synonyms
STRONGEST
antisocial boorish impolite indiscreet insensitive reckless rude
WEAK
apathetic asocial blind brash deaf discourteous egocentric hasty heedless hot-headed inattentive incautious indelicate indifferent listless madcap neglectful negligent primitive rash self-centered selfish sharp short tactless uncaring unceremonious unconcerned undiplomatic ungracious unheeding unkind unmindful unrefined
Antonyms
STRONGEST
mannerly polite refined sophisticated
WEAK
attentive considerate heeding kind mindful observant thinking thoughtful unselfish
ADJECTIVE
absent-minded, unobservant
Synonyms
STRONGEST
careless foolish ill-advised ill-considered irrational mindless reckless senseless stupid
WEAK
bovine confused doltish dull empty-headed flighty heedless imprudent inadvertent inane inattentive incomprehensible inept injudicious irreflective lamebrained loony neglectful negligent obtuse puerile rash regardless remiss silly undiscerning unheeding unmindful unreasonable unreasoning unreflective unthinking vacuous witless
Antonyms
STRONGEST
careful cautious intelligent mindful prudent rational reasonable responsible sensible thoughtful wise
WEAK
attentive considerate heeding kind observant thinking unselfish

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Not with an impossible grading policy or a thoughtless change to my course, but by letting students use artificial intelligence on team assignments.

From The Wall Street Journal • Feb. 25, 2026

Am I wrong to think they are thoughtless?

From MarketWatch • Nov. 3, 2025

"People dismissing all AI-generated content as slop right now are being thoughtless, because there's a lot of great, compelling AI content that deserves their interest."

From Barron's • Oct. 13, 2025

Perkins has sought specific training on how to sort out credible threats online from thoughtless reposts, allowing her to focus on students who pose real danger instead of punishing everyone.

From Salon • Jul. 29, 2025

It’s the most thoughtless, heedless, brainless thing I’ve ever done.

From "Linked" by Gordon Korman

Vocabulary lists containing thoughtless

Wolfie & Fly

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