endless

adjective4

1. •
   going on and on without ever stopping

   • Trains from Lime Street to Edge Hill were hauled by an endless hempen rope worked by a stationary engine on the platform at the latter station. — 1942
2. •
   Extending indefinitely.
3. •
   Too much or many to be exhausted; an extremely high number or amount of; immeasurable, innumerable.

   • In 1903, [Albert Shhoenhut] announced his Humpty Dumpty circus, with over 20 figures and animals, each with six joints enabling them to be put into endless positions. — 1971
4. •
   (no longer used) Without profitable end; fruitless; unsatisfying.

   • All loves are endless. — 1615