ThinkTank #4 - English
A verb may be described as transitive or intransitive depending on whether it needs an object to make logical sense.
Transitive verbs need an object to act upon. Without an object, the sentence will not be complete or make sense. Intransitive verbs are the opposite; they do not need an object to act upon. In fact, some verbs can only be intransitive; they will not make sense when used with an object.
Some verbs can be used both ways, but their meanings may differ (especially for phrasal verbs).