nonfinite

As adjectives the difference between indefinite and nonfinite

is that indefinite is without limit; forever, or until further notice; not definite while nonfinite is infinite.

As an adjective nonfinite

is infinite.

As a noun infinite is

infinity, endlessness.

In grammar terms the difference between infinitive and nonfinite

is that infinitive is formed with the infinitive while nonfinite is not finite.

As a noun infinitive

is a non-finite verb form considered neutral with respect to inflection; depending on language variously found used with auxilary verbs, in subordinate clauses, or acting as a gerund, and often as the dictionary form.

As an adjective nonfinite

is infinite.

As an adverb nonfinitely is

in a nonfinite manner.