Synonyms for transient

modified

1. Temporary

   provisional, ephemeral, transitory, momentary, evanescent, fleeting; see also temporary.

2. In motion

   migrating, emigrating, vacating; see moving 2.

transient applies to that which lasts or stays but a short time a transient guest, feeling, etc.; transitory refers to that which by its very nature must sooner or later pass or end life is transitory; ephemeral literally means existing only one day and, by extension, applies to that which is markedly short-lived ephemeral glory; momentary implies duration for a moment or an extremely short time a momentary lull in the conversation; evanescent applies to that which appears momentarily and fades quickly away an evanescent image of the scene revealed by lightning; fleeting suggests the swift passing movement of a thing that cannot be caught or held a fleeting thought

noun