momentary Synonyms

fugitive momentaneous fleeting transient temporary temporal superficial summary short-lived short rootless quick provisory provisionary provisional transitive under probation first stage of short duration short-run shortish semestral pro tem short-term short-range volatile vanishing unstable transitory transitorily probationary perishable passing flying flitting fickle fading evanescent ephemeric ephemeral deciduous cursory changeable catamenial brief fugacious hasty mutable mortal meteoric