transitory

Existing or lasting only a short time; short-lived or temporary.

Passing without continuing; lasting only a short time; unstable and fleeting; speedily vanishing.

Occurring or done in passing; cursory.

Synonyms Fleeting, etc. (see transient), temporary, evanescent, ephemeral, momentary, short-lived.

Continuing only for a short time; not enduring; fleeting; evanescent.