<p><strong>Verb</strong></p><ul><li>(used with object) to fill or overcome with horror, consternation, or fear; dismay:<ul><li>He was appalled by the damage from the fire.</li><li>I am appalled at your mistakes.</li></ul></li></ul><p><strong>Synonyms</strong></p><ul><li>daunt</li><li>horrify</li></ul>