<p><strong>Verb</strong></p><ul><li>(used with object)<ul><li>to supply or brighten with light; light up</li><li>to make lucid or clear; throw light on (a subject)</li><li>to decorate with lights, as in celebration</li><li>to enlighten, as with knowledge</li><li>to make resplendent or illustrious: A smile illuminated her face.</li><li>to decorate (a manuscript, book, etc.) with colors and gold or silver, as was often done in the Middle Ages.</li></ul></li><li>(used without object)<ul><li>to display lights, as in celebration</li><li>to become illuminated</li></ul></li></ul><p><strong>Adjective</strong></p><ul><li>Archaic: illuminated</li><li>Obsolete: enlightened</li></ul><p><strong>Noun</strong></p><ul><li>Archaic: a person who is or affects to be specially enlightened</li></ul><p><strong>Synonyms</strong></p><ul><li>elucidate</li><li>explain</li><li>clarify</li></ul>