<p><strong>Noun</strong></p><ul><li>A person who offers views or theories on profound questions in ethics, metaphysics, logic, and other related fields.</li><li>A person who is deeply versed in philosophy.</li><li>A person who establishes the central ideas of some movement, cult, etc.</li><li>A person who regulates their life, actions, judgments, utterances, etc., by the light of philosophy or reason.</li><li>A person who is rationally or sensibly calm, especially under trying circumstances.</li><li>Obsolete: An alchemist or occult scientist.</li></ul>