<p><strong>Verb:</strong></p><ul><li>to discolor or soil; spot or smudge with or as with soot, dust, dirt, etc.</li><li>Synonyms: dirty, smut, smear.</li><li>Antonyms: clean.</li><li>to sully or tarnish (a person, reputation, character, etc.); disgrace; discredit.</li><li>Synonyms: blot, taint.</li></ul><p><strong>Noun:</strong></p><ul><li>a dirty mark or smear, as of soot, dust, dirt, etc.</li><li>Synonyms: smutch, smut, smudge.</li><li>a stain or blot, as on reputation.</li><li>Synonyms: taint.</li></ul>