Lasting for a markedly brief time:
— Rapid momentaneous association of things that meet and pass.

synonyms: fleeting, fugitive, momentary.

Roget 111: transient, transitory, transitive; passing, evanescent, fleeting, cursory, short-lived, ephemeral; flying etc. v.; fugacious, fugitive; shifting, slippery; spasmodic; instantaneous, momentaneous^†.    temporal, temporary; provisional, provisory; deciduous; perishable, mortal, precarious, unstable, insecure; impermanent.    brief, quick, brisk, extemporaneous, summary; pressed for time etc. (haste) 684; sudden, momentary etc. (instantaneous) 113.    ... show more

Polish: przelotny