transient (adj.) Look up transient at Dictionary.com
c.1600, from Latin transiens (accusative transientem) "passing over or away," present participle of transire "cross over, pass away," from trans- "across" (see trans-) + ire "to go" (see ion). The noun is first attested 1650s; specific sense of "transient guest or boarder" first recorded 1880.