| improviso(free, informal, casual, impulsive, impulse) |
| inattentive(adjective, careless, indifferent, unqualified, unthinking) |
| lackadaisical(adjective, calm, cool, relaxed, detached) |
| negligent(adjective, calm, cool, careless, relaxed) |
| oblivious(casual, happy-go-lucky, slapdash) |
| rash(noun, adjective, thoughtless, impetuous, unwary) |
| regardless(adjective, careless, indifferent, casual, thoughtless) |
| smooth(adjective, calm, cool, easy, relaxed) |
| uncritical(adjective, mild, relaxed, casual, quick) |
| unguarded(adjective, neglect, casual, thoughtless, happy-go-lucky) |
| unmindful(adjective, careless, indifferent, casual, thoughtless) |
| casually |
| discourteous(adjective, rough, nasty, rude, angry) |
| effortless(adjective, calm, cool, easy, relaxed) |
| extemporarily |
| folksy(adjective, cool, careless, indifferent, casual) |
| free and easy(expression, adjective, idiom, mild, relaxed) |
| haphazard(adjective, organization, plan) |
| hasty(adjective, rough, casual, quick, thoughtless) |
| immediate(noun, adjective, free, informal, casual) |