An infinitive verb is the base form of a verb, typically preceded by “to” in English. It’s the purest form of the verb.

For example, in “I want to eat,” “to eat” is the infinitive verb phrase, with “to” serving as the marker. In some cases, like in commands or after modal verbs, the “to” can be dropped, as in “Please eat” or “You should eat.”

Therefore examples of infinitive verbs : want, eat, run, etc.