dateless Synonyms

endless timeless undated sempiternal spavined perpetual permanent perennial perdurable ongoing olden old nonagenarian longsome long-lived undatable steady silver-haired overaged long-standing long-range unaltered age-old never-ending unending venerable unremitting unpaired undying longevous lasting interminable continuous continuing continuate continual constant chronic ceaseless antique antediluvian ancient ageless aged deathless durative elderly infinite indestructible incessant