(grammar) A word that indicates an action, event, or state.

“The word “speak” is an English verb.”

Any word; a vocable.

An action as opposed to a trait or thing.

“Kindness is a verb, not an adjective. You're only kind if you do kind things.”

To use any word that is not, or had not been a verb (especially a noun) as if it were a verb.

(used as a neutral, unspecific verb) To perform any action that is normally expressed by a verb.