| short-lived(adjective, brief, transient, transitory, transientness) |
| thoughtless(adjective, careless, indifferent, casual, quick) |
| unthinking(adjective, slight, careless, cold, indifferent) |
| easygoing(adjective, cool, relaxed, laid-back, nonchalant) |
| fugitive(adjective, brief, transient, transitory, short-lived) |
| impermanent(adjective, brief, transient, transitory, short-lived) |
| inconsiderate(adjective, careless, indifferent, casual, quick) |
| mindless(casual, inattention, happy-go-lucky, slapdash) |
| negligent(adjective, careless, indifferent, casual, sloppy) |
| random(adjective, casual, hasty) |
| regardless(adjective, careless, indifferent, casual, thoughtless) |
| restless(adjective, transient) |
| shifting(adjective, transient, transientness) |
| unconcerned(adjective, careless, relaxed, indifferent, casual) |
| unmindful(adjective, careless, indifferent, casual, thoughtless) |
| volatile(adjective, brief, transient, transitory, short-lived) |
| changeable(adjective, transient) |
| depthless(adjective, slight, flat, detail, casual) |
| disregardful(adjective, careless, indifferent, casual, thoughtless) |
| epidermal(adjective, shallow) |