Adjective
-
unaffected by time
"few characters are so dateless as Hamlet"
"Helen's timeless beauty"
-
not bearing a date
"a dateless letter"
-
of such great duration as to preclude the possibility of being assigned a date
"dateless customs"
-
having no known beginning and presumably no end
"the dateless rise and fall of the tides"
"time is endless"
"sempiternal truth"