adj. careless, rash, thoughtless, incautious, heedless, foolhardy, imprudent, unwise, injudicious, impulsive, irresponsible, negligent, unmindful, foolish, devil-may-care, daredevil, wild, breakneck, dangerous, madcap, mad, hare-brained I won't go with Oliver because he's a reckless driver
RECKLESS
Meaning of RECKLESS in English
Oxford thesaurus English vocab. Английский словарь Оксфорд тезаурус. 2012