adjective
Synonyms: careless 1, feckless, inadvertent, irreflective, thoughtless, uncaring, unheeding, unrecking, unreflective, unthinking
Antonyms: heedful, heeding
adjective
Synonyms: careless 1, feckless, inadvertent, irreflective, thoughtless, uncaring, unheeding, unrecking, unreflective, unthinking
Antonyms: heedful, heeding
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003