| transient(adjective, time, brief, transient, transitory) |
| uncritical(adjective, slight, detail, casual, trivial) |
| heedless(adjective, careless, indifferent, casual, quick) |
| indifferent(adjective, cool, careless, relaxed, casual) |
| rapid(adjective, fast, casual, quick, speedy) |
| rough(adjective, hard, raw, vague, basic) |
| skin-deep(adjective, slight, detail, trivial, surface) |
| surface(noun, adjective, slight, flat, detail) |
| desultory(adjective, slight, detail, casual, trivial) |
| ephemeral(adjective, brief, transient, transitory, short-lived) |
| evanescent(adjective, brief, transient, transitory, short-lived) |
| temporary(adjective, time, brief, transient, transitory) |
| transitory(adjective, brief, transient, short-lived, transientness) |
| facile(adjective, easy, mastered) |
| fading(adjective, brief, transient, transitory, short-lived) |
| fast(adjective, casual, quick, speedy, hasty) |
| flitting(adjective, brief, transient, transitory, short-lived) |
| haphazard(adjective, casual, hasty) |
| insouciant(adjective, cool, informal, relaxed, easygoing) |
| instantaneous(adjective, fast, rapid, swift, instant) |