Last Updated: 07 Jan 2019 The Verb Definition: A verb is an action or express word. It indicates the action or express in the present, past and future tenses. The Principal Parts Of Verbs Verbs have four principal parts of verbs or fundamental forms that are used to create a tense e.g. Present Past Past Participle Present Participle abandon abandoned abandoned abandoning accept accepted accepted accepting go went gone going take took taken taking become became became becoming cut cut cut cutting read read read reading complete completed completed completing delete deleted deleted deleting Agreement Of The Verb With The Subject Definition: A verb must agree with its Subject in Number and Person. When we use a verb, we have to say who or what is doing the action.