Meaning of INFINITIVE in English

I. adjective Etymology: Middle English infinityf, from Late Latin infinitivus, from Latin infinitus Date: 15th century formed with the ~, ~ly adverb II. noun Date: 1530 a verb form normally identical in English with the first person singular that performs some functions of a noun and at the same time displays some characteristics of a verb and that is used with to (as in “I asked him to go ”) except with auxiliary and various other verbs (as in “no one saw him leave ”)

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.