adj. 25B6; adjective LASTING, enduring, classic, ageless, permanent, perennial, abiding, unfailing, unchanging, unvarying, never-changing, changeless, unfading, unending, undying, deathless, immortal, eternal, everlasting, immutable.
ephemeral.
TIMELESS
Meaning of TIMELESS in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012