dateless

• POS: Adjective
• HYPHEN: date=less

OXFORD DICTIONARY

dateless, adj.
1 having no date.
2 of immemorial age.
3 not likely to become out of date.

THESAURUS

dateless

age-old, ageless, ancient, antique, auld, ceaseless, coeternal, constant, continual, continuous, elderly, endless, eternal, eterne, ever-being, ever-durable, ever-during, everlasting, everliving, hoary, immemorial, incessant, indestructible, infinite, interminable, never-ceasing, never-ending, nonstop, nonterminating, nonterminous, of old, of yore, olamic, old, old as Methuselah, old as history, old as time, old-time, olden, perdurable, permanent, perpetual, sempiternal, steady, timeless, unceasing, unending, unintermitting, uninterrupted, unremitting, venerable, without end