<p><strong>Adjective</strong></p><ul><li>of little depth; not deep</li><li>lacking depth; superficial</li><li>taking in a relatively small amount of air in each inhalation</li></ul><p><strong>Noun</strong></p><ul><li>a shallow part of a body of water; shoal</li></ul><p><strong>Adverb</strong></p><ul><li>at a shallow position</li></ul><p><strong>Verb</strong></p><ul><li>to make or become shallow</li></ul>