dateless

adjective6

1. •
   Without a date imprinted, assigned, or associated.

   • The other day was dateless, even for my dateless life; for I had forgotten time and had no notion of anything anywhere, when in a small French town I strolled into a cafe noisy with French talk. — 1936
2. •
   Having no date (meeting with a lover or potential lover).

   • It is hard to believe that she could be dateless on a Saturday night.
3. •
   Timeless; immortal; endless.

   • Then can I drown an eye, unused to flow, / For precious friends hid in death's dateless night — 1609
4. •
   Without a start; immemorial.
5. •
   (dialect, slang) Thick-headed.

   • Into the court you'd swanned, you dateless little pillock, if not wholly confident of winning, surely careless of losing. — 1997
6. •
   Out of one's head; deranged.

   • Poor soul, she's gone dateless, I think, with care, and watching, and overmuch trouble; and who can wonder? — 1848