What is a non finite?

A non-finite verb is a verb form that does not indicate tense, person, or number, and cannot function as a main verb in a sentence. Examples include infinitives (e.g., "to run"), gerunds (e.g., "running"), and participles (e.g., "running" as an adjective). These forms often serve as nouns, adjectives, or adverbs, allowing for more complex sentence structures. Non-finite verbs are essential for creating clauses and expressing actions without specifying the subject or time frame.