<p><strong>Verb</strong></p><ul><li>(used with object) to give careful attention to: He did not heed the warning.</li><li>Synonyms: mark, consider, observe, note</li><li>Antonyms: ignore, disregard</li></ul><p><strong>Noun</strong></p><ul><li>careful attention; notice; observation (usually with give or take).</li><li>Synonyms: watchfulness, vigilance, caution, care, consideration</li></ul>