| temporary(adjective, moving, continue, casual, brief) |
| transient(adjective, moving, casual, limited, brief) |
| ephemeral(adjective, limited, brief, passing, temporary) |
| short-lived(adjective, time, limited, brief, temporary) |
| transitory(adjective, short, limited, brief, temporary) |
| evanescent(adjective, limited, brief, temporary, transient) |
| momentary(adjective, limited, brief, temporary, transient) |
| passing(adjective, limited, brief, temporary, transient) |
| fleeting(adjective, limited, brief, temporary, transient) |
| fugitive(noun, adjective, limited, brief, temporary) |
| mortal(adjective, human, transient, temporal, transientness) |
| temporal(adjective, transient, momentary, transientness) |
| brief(adjective, short, limited, temporary, transient) |
| fugacious(adjective, limited, brief, temporary, transient) |
| volatile(adjective, limited, changeable, brief, temporary) |
| fly-by-night(adjective, short, unreliable, brief, shady) |
| unstable(adjective, short, limited, impulsive, unpredictable) |
| fickle(adjective, impulsive, unpredictable, transient, explosive) |
| mutable(adjective, changeable, transient) |
| changeable(adjective, short, limited, impulsive, unpredictable) |