adj. 25B6; adjective ENDURING, everlasting, undying, immortal, perennial, long-lasting; indestructible, inextinguishable, ineradicable, unfading, permanent, never-ending, never dying; poetic/literary sempiternal, perdurable.
IMPERISHABLE
Meaning of IMPERISHABLE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012