transitory
Definitions
Not permanent; lasting only for a short time.
Brief and fleeting in nature.
Examples
The beauty of the sunset is merely transitory, fading into darkness within minutes.
He viewed his time in the small town as a transitory phase before moving to the city for his career.
Synonyms
fleeting ephemeral temporary momentary short-lived evanescent fugacious
Antonyms
permanent enduring everlasting perpetual eternal lasting constant