| impetuous(noun, adjective, simple, passionate, violent) |
| insouciant(adjective, calm, cool, mild, relaxed) |
| reckless(noun, adjective, careless, casual, thoughtless) |
| relaxed(adjective, calm, cool, mild, cheerful) |
| slapdash(adjective, careless, indifferent, casual, unconcerned) |
| superficial(adjective, rude, unreasonable, casual, unthinking) |
| distant(adjective, cool, indifferent, restrained, unfriendly) |
| half ass |
| heedless(adjective, careless, indifferent, casual, thoughtless) |
| hurried |
| mindless(casual, inattention, happy-go-lucky, slapdash) |
| natural(adjective, calm, simple, easy, casual) |
| thoughtless(adjective, careless, indifferent, casual, sloppy) |
| unceremonious(adjective, rude, careless, indifferent, casual) |
| ad libitum(expression, adjective, idiom, adverb, improv) |
| apathetic(adjective, calm, cool, relaxed, indifferent) |
| automatic(adjective, free, simple, fake, natural) |
| devil-may-care(noun, mild, careless, relaxed, casual) |
| easy(adjective, calm, cool, relaxed, cheerful) |
| extemporaneously(adverb, impulse) |