ageless

ageless
    adj 1: continuing forever or indefinitely; "the ageless themes
           of love and revenge"; "eternal truths"; "life
           everlasting"; "hell's perpetual fires"; "the unending
           bliss of heaven" [syn: {ageless}, {aeonian}, {eonian},
           {eternal}, {everlasting}, {perpetual}, {unending},
           {unceasing}]
    

Ageless \Age"less\ ([=a]j"l[e^]s), a.
   Without old age limits of duration; as, fountains of ageless
   youth.
   [1913 Webster]
    

52 Moby Thesaurus words for "ageless":
      age-old, ancient, antique, auld, ceaseless, coeternal, constant,
      continual, continuous, dateless, 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