<p><strong>Adjective</strong></p><ul><li>making no sound; quiet; still: a silent motor.</li><li>Synonyms: soundless</li><li>Antonyms: noisy</li><li>refraining from speech.</li><li>speechless; mute.</li><li>not inclined to speak; taciturn; reticent.</li><li>Antonyms: talkative</li><li>characterized by absence of speech or sound: a silent prayer.</li><li>unspoken; tacit: a silent assent.</li><li>omitting mention of something, as in a narrative: The records are silent about this crime.</li><li>inactive or quiescent, as a volcano.</li><li>Synonyms: dormant</li><li>not sounded or pronounced: The “b” in “doubt” is a silent letter.</li><li>Movies: not having spoken dialogue or a soundtrack.</li><li>Medicine/Medical: producing no symptoms: silent gallstones.</li></ul><p><strong>Noun</strong></p><ul><li>Usually silents.</li><li>silent films.</li></ul>