adjective
1.
Synonyms: adventurous , adventuresome, audacious, daredevil, daring, foolhardy, rash, temerarious, venturesome, venturous
Related Word: desperate, hopeless
2.
Synonyms: rash 1, brash, hasty, hotheaded, ill-advised, incautious, inconsiderate, mad-brained, madcap, thoughtless
Antonyms: calculating
3.
Synonyms: irresponsible , carefree, careless, feckless, incautious, uncareful, wild