Infinitive Definition

ĭn-fĭnĭ-tĭv
infinitives
noun
The form of a verb that expresses existence or action without reference to person, number, or tense and that can function grammatically as a noun, adjective, or adverb: in English, it is usually the form of the first person singular present preceded by the marker to (Ex.: to go, to think) or by another verb form (Ex.: can he speak? make him try)
Webster's New World
(grammar) The uninflected form of a verb. In English, this is usually formed with the verb stem preceded by 'to'. e.g. 'to sit'
Wiktionary
adjective
Of or connected with an infinitive.
An infinitive phrase.
Webster's New World
Unlimited; not bounded or restricted; undefined.
Wiktionary

Other Word Forms of Infinitive

Noun

Singular:
infinitive
Plural:
infinitives

Origin of Infinitive

  • From Middle English infinitif of an infinitive from Old French from Late Latin īnfīnītīvus unlimited, indefinite, infinitive from Latin īnfīnītus infinite infinite

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle French infinitif, from Late Latin infinitivus, from Latin infinitus

    From Wiktionary

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