ageless

(s) continuing forever or indefinitely
- the ageless themes of love and revenge
- eternal truths
- life everlasting
- hell's perpetual fires
- the unending bliss of heaven
eternal, everlasting, perpetual, unceasing, unending, aeonian, eonian,

Synonyms

eternal everlasting perpetual unceasing unending aeonian eonian

Words of close approximity

agelessness