endless

Having no end.

endless time; endless praise

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.

Extending indefinitely.

an endless line

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.

Without profitable end; fruitless; unsatisfying.

All loves are endless.