Adjective dateless has 4 senses
  1. dateless, endless, sempiternal - having no known beginning and presumably no end; "the dateless rise and fall of the tides"; "time is endless"; "sempiternal truth"
    Antonym: finite (indirect, via infinite)
  2. dateless - of such great duration as to preclude the possibility of being assigned a date; "dateless customs"
    Antonyms:
    datable, dateable (indirect, via undatable)
  3. dateless, undated - not bearing a date; "a dateless letter"
    Antonyms: datable, dateable (indirect, via undatable)
  4. dateless, timeless - unaffected by time; "few characters are so dateless as Hamlet"; "Helen's timeless beauty"
    Antonym: altered (indirect, via unaltered)
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