Having no end. / Extending indefinitely. / (obsolete) Without profitable end; fruitless; unsatisfying.

The state or characteristic of being endless.

plural of endlessness

(Internet slang) Synonym of Eternal September

plural of endless runner

(video games) A style of platform game in which the player character runs non-stop through a hazardous course, and must be guided to jump, duck, etc. to avoid the hazards.

bandsaw

plural of endless saw

plural of endless screw

An arrangement for producing slow motion in machinery, consisting of a screw whose thread gears into a wheel with skew teeth.