Synonyms of thoughtless in English:

thoughtless


See US English definition of thoughtless

See UK English definition of thoughtless

See Spanish definition of desconsiderado

adjective

1‘I'm so sorry—how thoughtless of me’

SYNONYMS
inconsiderate, uncaring, heedless, unmindful, regardless, insensitive, uncharitable, unkind
tactless, undiplomatic, indiscreet, careless, selfish, impolite, rude
ANTONYMS

considerate

2‘to think a few minutes of thoughtless pleasure could end in such a terrible way’

SYNONYMS
unthinking, heedless, careless, unmindful, absent-minded, injudicious, ill-advised, ill-considered, imprudent, unwise, foolish, silly, stupid, reckless, rash, precipitate, negligent, neglectful, remiss
ANTONYMS

careful