1. impermanent, passing. Temporary,transient,transitory agree in referring to that which is not lasting or permanent. Temporary implies an arrangement established with no thought of continuance but with the idea of being changed soon: a temporary structure.Transient describes that which is in the process of passing by, and which will therefore last or stay only a short time: a transient condition.Transitory describes an innate characteristic by which a thing, by its very nature, lasts only a short time: Life is transitory.
1540s, from Latin temporarius "of seasonal character, lasting a short time," from tempus (genitive temporis) "time, season" (see temporal). The noun meaning "person employed only for a time" is recorded from 1848.