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Webster 1913 Edition

(āj′lĕs)

Adj.

Without old age limits of duration;

as, fountains of

ageless

youth

ageless ‎(comparative more ageless, superlative most ageless)

(relative to past) Having existed for so great a period of time that its longevity cannot be expressed.
The ageless pyramids stood prominently against the sunset.
(relative to future) Continuing infinitely or indefinitely.
This memorial will show our ageless respect to those who died.
Always appearing youthful; never seeming to age.
Her ageless face.
- 2011 February 12, Phil McNulty, “Man Utd 2 - 1 Man City”, in BBC:
  As United finally started to pose a threat, Darren Fletcher headed straight at City keeper Hart from Ryan Giggs' cross - and the seemingly ageless Old Trafford veteran was instrumental when they took the lead four minutes before the interval.

having existed for so great a period of time that its longevity cannot be expressed

continuing infinitely or indefinitely

youthful