<p><strong>Adjective</strong></p><ul><li>causing great dread, fear, or terror; terrible: a dreadful storm.</li><li>inspiring awe or reverence.</li><li>extremely bad, unpleasant, or ugly: dreadful cooking; a dreadful hat.</li></ul><p><strong>Noun</strong></p><ul><li>British: penny dreadful.</li><li>a periodical given to highly sensational matter.</li></ul>