Transitive verbs are verbs that use a direct object.
Intransitive verbs are verbs that do not use a direct object.
A verb can be described as transitive or intransitive based on whether or not it requires an object to express a complete thought. A transitive verb is one that makes sense only if it exerts its action on an object. An intransitive verb will make sense without an object. Some verbs can be used both ways.