<p><strong>Adjective</strong></p><ul><li>having a crisp or thick crust: a loaf of crusty French bread.</li><li>of the nature of or resembling a crust.</li><li>harsh; surly; rude: a crusty remark.</li></ul><p><strong>Synonyms</strong></p><ul><li>brusque</li><li>curt</li><li>touchy</li><li>prickly</li><li>testy</li></ul>