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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.

Godzilla is a creature of thoughtless collateral damage.

From Salon • Mar. 20, 2026

Showed courage in the first innings to put a first-Test pair behind him and looked good in the second until a thoughtless shot.

From BBC • Dec. 7, 2025

A well-chosen pair of socks isn’t a thoughtless gift.

From The Wall Street Journal • Nov. 28, 2025

Am I wrong to think they are thoughtless?

From MarketWatch • Nov. 3, 2025

“You are a thoughtless, insolent child, and several brave men have died this evening in order to make you safe. You’d do better to act politely.”

From "The Amber Spyglass" by Philip Pullman

Vocabulary lists containing thoughtless

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