Transient

вре́менный

vrémennyj

(remaining for only a brief time)

кратковре́менный

kratkovrémennyj

(passing or disappearing with time; transitory)

мимолётный

mimoljótnyj

(passing or disappearing with time; transitory)

недолгове́чный

nedolgovéčnyj

(passing or disappearing with time; transitory)

отде́льный

otdélʹnyj

(occasional; isolated; one-off; individual)

преходя́щий

prexodjáščij

(passing or disappearing with time; transitory)

скороте́чный

skorotéčnyj

(passing or disappearing with time; transitory)

случа́йный

slučájnyj

(occasional; isolated; one-off; individual)

транзито́рный

tranzitórnyj

(passing or disappearing with time; transitory)