unchangeably

As an adjective invariable

is not variable; unalterable; uniform; always having the same value.

As a noun invariable

is something that does not vary; a constant.

As an adverb unchangeably is

in a way that cannot be varied]], or [[change#verb|changed.

Continually is a related term of unchangeably.

As adverbs the difference between continually and unchangeably

is that continually is in a continuous manner; non-stop while unchangeably is in a way that cannot be varied]], or [[change#verb|changed.

Unchangeably is a related term of unceasingly.

As adverbs the difference between unchangeably and unceasingly

is that unchangeably is in a way that cannot be varied]], or [[change#verb|changed while unceasingly is without ceasing (stopping), continuously.

Unchangeably is a related term of incessantly.

As adverbs the difference between unchangeably and incessantly

is that unchangeably is in a way that cannot be varied]], or [[change#verb|changed while incessantly is in a manner without pause or stop, especially to the point of annoyance; not ceasing.

Unchangeably is a related term of perpetually.

As adverbs the difference between unchangeably and perpetually

is that unchangeably is in a way that cannot be varied]], or [[change#verb|changed while perpetually is seeming to never end; endlessly; constantly.

Unchangeably is a related term of eternally.

As adverbs the difference between unchangeably and eternally

is that unchangeably is in a way that cannot be varied]], or [[change#verb|changed while eternally is for eternity; forever.

As an adjective unalterable

is incapable of changing or being altered.

As an adverb unchangeably is

in a way that cannot be varied, or changed.

As adverbs the difference between immovably and unchangeably

is that immovably is in an immovable manner while unchangeably is in a way that cannot be varied]], or [[change#verb|changed.

Unchangeably is a related term of everlastingly.

As adverbs the difference between unchangeably and everlastingly

is that unchangeably is in a way that cannot be varied]], or [[change#verb|changed while everlastingly is in an everlasting manner; so as to be everlasting.

Forever is a synonym of unchangeably.

As adverbs the difference between forever and unchangeably

is that forever is (duration) for all time, for all eternity; for an infinite amount of time while unchangeably is in a way that cannot be varied]], or [[change#verb|changed.

As a noun forever

is an extremely long time.