perpetuity

As an adjective unlimited

is limitless or without bounds; unrestricted.

As a noun perpetuity is

(uncountable) the quality or state of being perpetual; endless duration; uninterrupted existence.

As nouns the difference between perpetuity and terms

is that perpetuity is (uncountable) the quality or state of being perpetual; endless duration; uninterrupted existence while terms is .

As a noun perpetuity

is (uncountable) the quality or state of being perpetual; endless duration; uninterrupted existence.

As an adjective undefined is

lacking a definition or value.

Infinity is a synonym of perpetuity.

In uncountable terms the difference between perpetuity and infinity

is that perpetuity is the quality or state of being perpetual; endless duration; uninterrupted existence while infinity is the symbol ∞.

As an adverb perpetually

is seeming to never end; endlessly; constantly.

As a noun perpetuity is

the quality or state of being perpetual; endless duration; uninterrupted existence.

As nouns the difference between longevity and perpetuity

is that longevity is the quality of being long-lasting, especially of life while perpetuity is the quality or state of being perpetual; endless duration; uninterrupted existence.

As an adjective meaningful

is having meaning, significant.

As a noun perpetuity is

(uncountable) the quality or state of being perpetual; endless duration; uninterrupted existence.

As nouns the difference between meaningfulness and perpetuity

is that meaningfulness is the state or measure of being meaningful while perpetuity is (uncountable) the quality or state of being perpetual; endless duration; uninterrupted existence.

As a noun perpetuity

is the quality or state of being perpetual; endless duration; uninterrupted existence.

As an adjective infinite is

indefinably large, countlessly great; immense.

As a numeral infinite is

infinitely many.

As nouns the difference between perpetuity and permanent

is that perpetuity is (uncountable) the quality or state of being perpetual; endless duration; uninterrupted existence while permanent is a chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm.

As an adjective permanent is

without end, eternal.

As a verb permanent is

(dated) to perm (the hair).