| unthinking(adjective, careless, casual, thoughtless, impulsive) |
| wanton(adjective, free, careless, wild, casual) |
| weak(adjective, feature, state, trait) |
| cavalier(adjective, easygoing, carefree) |
| cool(adjective, feature, state, trait) |
| dashing |
| debonair(adjective, feature, state, trait) |
| disregardful(soft, tolerant, slack, lenient, remiss) |
| fearless |
| flippant(adjective, defiant) |
| fly-by-night(adjective, madcap, feckless, unaccountable, irresponsive) |
| foolish(adjective, careless, impulsive, reckless, negligent) |
| game |
| giddy(careless, wild, immoral, thoughtless, reckless) |
| high-spirited(adjective, feature, state, trait) |
| ill-considered(adjective, careless, immoral, thoughtless, impulsive) |
| inconsiderate(adjective, careless, wild, bold, thoughtless) |
| injudicious(adjective, careless, bold, thoughtless, impulsive) |
| intrepid |
| laid back(expression, adjective, feature, state, trait) |