| changeable(adjective, anxious, limited, unsettled, agitated) |
| cursory(adjective, time, brief, transitory, short-lived) |
| fickle(adjective, impulsive, unpredictable, changeableness, explosive) |
| fly-by-night(adjective, moving, idle, unsettled, exile) |
| fading(adjective, brief, transitory, short-lived) |
| flitting(adjective, brief, temporary, transitory, short-lived) |
| inconstant(adjective, anxious, nervous, unsettled, agitated) |
| migrant(noun, adjective, person, alien, visitor) |
| shifting(adjective, transientness) |
| unstable(adjective, anxious, limited, unsettled, agitated) |
| instantaneous(adjective, transientness) |
| meteoric(adjective, brief, immediate, instant, sudden) |
| migratory(adjective, moving, temporary) |
| nomadic(adjective, moving, anxious, idle, casual) |
| perishable(adjective, present, short, limited, brief) |
| provisional(adjective, temporary, tentative, contingent) |
| restless(adjective, content, about, changeableness) |
| capricious(impulsive, unpredictable, changeableness, explosive) |
| drifting(adjective, traveling) |
| erratic(adjective, impulsive, unpredictable, changeableness, explosive) |