<p><strong>Verb</strong></p><ul><li>(used without object)<ul><li>To have confidence in the truth, the existence, or the reliability of something, although without absolute proof that one is right in doing so: Only if one believes in something can one act purposefully.</li></ul></li><li>(used with object)<ul><li>To have confidence or faith in the truth of (a positive assertion, story, etc.); give credence to.</li><li>To have confidence in the assertions of (a person).</li><li>To have a conviction that (a person or thing) is, has been, or will be engaged in a given action or involved in a given situation: The fugitive is believed to be headed for the Mexican border.</li><li>To suppose or assume; understand (usually followed by a noun clause): I believe that he has left town.</li></ul></li></ul><p><strong>Verb Phrase</strong></p><ul><li>To be persuaded of the truth or existence of: to believe in Zoroastrianism; to believe in ghosts.</li><li>To have faith in the reliability, honesty, benevolence, etc., of: I can help only if you believe in me.</li></ul>