DATELESS
dateless, timeless
(adjective) unaffected by time; “few characters are so dateless as Hamlet”; “Helen’s timeless beauty”
dateless, undated
(adjective) not bearing a date; “a dateless letter”
dateless
(adjective) of such great duration as to preclude the possibility of being assigned a date; “dateless customs”
dateless, endless, sempiternal
(adjective) having no known beginning and presumably no end; “the dateless rise and fall of the tides”; “time is endless”; “sempiternal truth”
Source: WordNet® 3.1
Etymology 1
Adjective
dateless (comparative more dateless, superlative most dateless)
Out of one's head; deranged.
(British, dialect, slang) thick-headed
Etymology 2
Adjective
dateless (not comparable)
Without a date imprinted, assigned, or associated.
Having no date—a meeting with a lover or potential lover.
Timeless; immortal
Without a start; immemorial
(archaic) Without an end; endless
Anagrams
• detassel, tasseled
Source: Wiktionary
Date"less, a.
Definition: Without date; having no fixed time.
Source: Webster’s Unabridged Dictionary 1913 Edition