<p><strong>Verb (used without object):</strong></p><ul><li>to shake tremulously; quiver or tremble</li><li>He stood there quavering with fear</li><li>to sound, speak, or sing tremulously</li><li>Her voice quavered a moment and then she regained control</li><li>to perform trills in singing or on a musical instrument</li></ul><p><strong>Verb (used with object):</strong></p><ul><li>to utter, say, or sing with a quavering or tremulous voice</li></ul><p><strong>Noun:</strong></p><ul><li>a quavering or tremulous shake, especially in the voice</li><li>a quavering tone or utterance</li><li>Music (chiefly British): an eighth note</li></ul>