ephemeral
adjective /ɪˈfemərəl/
  /ɪˈfemərəl/
(formal)- lasting or used for only a short period of time synonym short-lived- ephemeral pleasures
- leaflets, handouts and other ephemeral material
- It is a critic’s job to follow every ephemeral fashion.
 Word Originlate 16th cent.: from Greek ephēmeros (see ephemera) + -al.