Infinitive (noun)

1. The base form of a verb that is typically preceded by the word "to".
2. A verbal noun that typically expresses an action or state and is not limited by number or person.

Origin:

The word "infinitive" comes from the latin word "infinitivus" meaning "unlimited.".

Examples:

1. The infinitive "to run" is the base form of the verb "run".
2. The infinitive is the most basic form of a verb.
3. He learned how to swim is an example of infinitive phrase.
4. The infinitive is often used to express purpose or intent.
5. In some languages, the infinitive form of a verb is used to indicate the subject of the sentence.