Dynamic verb
A dynamic or finetive verb is a verb that shows continued or progressive action on the part of the subject. This is the opposite of a stative verb.
Dynamic verbs have duration, that is, they occur over time. This time may or may not have a defined endpoint, and may or may not yet have occurred. These distinctions lead to various forms related to tense and aspect. For example, a dynamic verb may be said to have a durative aspect if there is not a defined endpoint, or a punctual aspect if there is a defined endpoint.
Examples of dynamic verbs are 'to run', 'to hit', 'to intervene', 'to savour' and 'to go'.
An outstanding feature of modern English is its limited use of the simple present tense of dynamic verbs. Generally, the progressive tense is required to express an action taking place in the present (I am going). The simple present usually refers to a habitual action (I go every day), a general rule (water runs downhill), a future action in some subordinate clauses (if I go) or the historical present (President signs bill).
A dynamic verb expresses a wide range of actions which may be physical (to run), mental (to ponder) or perceptual (to see) as opposed to a stative verb which purely expresses a state in which there is no obvious action (to know, believe, suppose etc.).