impossibly

As adverbs the difference between impossibly and unlikely

is that impossibly is not possibly; in an impossible manner while unlikely is in an improbable manner.

As an adjective unlikely is

not likely; improbable; not to be reasonably expected.

As a noun unlikely is

something or somebody considered unlikely.

As a noun impossibility

is something that is impossible.

As an adverb impossibly is

not possibly; in an impossible manner.

As adverbs the difference between impossibly and extremely

is that impossibly is not possibly; in an impossible manner while extremely is (degree) to an extreme degree.

As adverbs the difference between impossibly and improbably

is that impossibly is not possibly; in an impossible manner while improbably is in an improbable manner; without probability.

As adverbs the difference between impassibly and impossibly

is that impassibly is in an impassible manner while impossibly is not possibly; in an impossible manner.