constantly

As an adjective permanent

is without end, eternal.

As a noun permanent

is a chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm.

As a verb permanent

is (dated) to perm (the hair).

As an adverb constantly is

(archaic) with steadfastness; with resolve; in loyalty, faithfully.

As adverbs the difference between firmly and constantly

is that firmly is in a firm or definite or strong manner while constantly is with steadfastness; with resolve; in loyalty, faithfully.

As adverbs the difference between abruptly and constantly

is that abruptly is in an abrupt manner; without giving notice, or without the usual forms; suddenly; precipitously while constantly is (archaic) with steadfastness; with resolve; in loyalty, faithfully.

As an adverb constantly

is (archaic) with steadfastness; with resolve; in loyalty, faithfully.

As a conjunction of is

(subordinating ) whether, if.

As a noun persistence

is the property of being persistent.

As an adverb constantly is

with steadfastness; with resolve; in loyalty, faithfully.

Constantly is a related term of everlastingly.

As adverbs the difference between constantly and everlastingly

is that constantly is (archaic) with steadfastness; with resolve; in loyalty, faithfully while everlastingly is in an everlasting manner; so as to be everlasting.

Constantly is a related term of interminably.

As adverbs the difference between constantly and interminably

is that constantly is (archaic) with steadfastness; with resolve; in loyalty, faithfully while interminably is in an interminable manner.

As adverbs the difference between routinely and constantly

is that routinely is in a routine manner, in a way that has become common or expected while constantly is with steadfastness; with resolve; in loyalty, faithfully.

Constantly is a related term of eternally.

As adverbs the difference between constantly and eternally

is that constantly is (archaic) with steadfastness; with resolve; in loyalty, faithfully while eternally is for eternity; forever.

As adverbs the difference between constantly and unchangeably

is that constantly is with steadfastness; with resolve; in loyalty, faithfully while unchangeably is in a way that cannot be varied, or changed.