unending

As an adjective unending

is not ending; having no end.

As an adverb forever is

(duration) for all time, for all eternity; for an infinite amount of time.

As a noun forever is

an extremely long time.

As adjectives the difference between unending and nonending

is that unending is not ending; having no end while nonending is not coming to an end.

As adjectives the difference between unending and false

is that unending is not ending; having no end while false is (label) one of two states of a boolean variable; logic.

Uninterrupted is a related term of unending.

As adjectives the difference between uninterrupted and unending

is that uninterrupted is continuing with no interruption while unending is not ending; having no end.

As a noun brief

is letter (written message).

As an adjective unending is

not ending; having no end.

As adjectives the difference between unending and killed

is that unending is not ending; having no end while killed is deoxidized.

As a verb killed is

past tense of kill.

As adjectives the difference between ongoing and unending

is that ongoing is continuing, permanent while unending is not ending; having no end.

As a noun ongoing

is something that is going on; a happening.

As adjectives the difference between timeless and unending

is that timeless is eternal while unending is not ending; having no end.

Unending is a related term of deep.

As adjectives the difference between unending and deep

is that unending is not ending; having no end while deep is extending far away from a point of reference, especially downwards .

As an adverb deep is

deeply.

As a noun deep is

the deep part of a lake, sea, etc.