Definitions
1.NounThe infinitive mood or mode (a grammatical mood).
2.NounA non-finite verb form considered neutral with respect to inflection; depending on language variously found used with auxiliary verbs, in subordinate clauses, or acting as a gerund, and often as the dictionary form.
3.NounA verbal noun formed from the infinitive of a verb.
4.AdjectiveFormed with the infinitive.
5.AdjectiveUnlimited; not bounded or restricted; undefined.