adj. 25B6; adjective UNMINDFUL, taking no notice, paying no heed, unheeding, disregardful, neglectful, oblivious, inattentive, blind, deaf; incautious, imprudent, rash, reckless, foolhardy, improvident, unwary.
HEEDLESS
Meaning of HEEDLESS in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012