dateless

Etymology 1
. Perhaps derived from. See also.

Adjective

 * 1) Out of one's head; deranged.
 * 2)  Thick-headed.
 * 1)  Thick-headed.
 * 1)  Thick-headed.
 * 1)  Thick-headed.

Etymology 2
Coined between 1585 and 1595 from

Adjective

 * 1) Without a date imprinted, assigned, or associated.
 * 2) Having no date—a meeting with a lover or potential lover.
 * 3) Timeless; immortal
 * 4) Without a start; immemorial
 * 5)  Without an end; endless
 * 1) Timeless; immortal
 * 2) Without a start; immemorial
 * 3)  Without an end; endless
 * 1)  Without an end; endless