timeless
adjective /ˈtaɪmləs/
/ˈtaɪmləs/
(formal)- not appearing to be affected by the process of time passing or by changes in fashion
- her timeless beauty
- His work has a timeless quality.
- The whole valley seemed to be under a spell, in a timeless past unaffected by world events.
- existing or continuing forever synonym unending
- timeless eternity