Available Definitions:
1) a. - Without end; having no end or conclusion; perpetual; interminable; -- applied to length, and to duration; as, an endless line; endless time; endless bliss; endless praise; endless clamor.
2) a. - Infinite; excessive; unlimited.
3) a. - Without profitable end; fruitless; unsatisfying.
4) a. - Void of design; objectless; as, an endless pursuit.