<p><strong>Adjective</strong></p><ul><li>contracting</li><li>constrictive</li><li>styptic</li><li>harshly biting</li><li>caustic: his astringent criticism.</li><li>Synonyms: rigorous, harsh, sharp</li><li>stern or severe: austere.</li><li>Synonyms: rigorous, harsh, sharp</li><li>sharply incisive: pungent: astringent wit.</li></ul><p><strong>Noun</strong></p><ul><li>Medicine/Medical: a substance that contracts the tissues or canals of the body, thereby diminishing discharges, as of mucus or blood.</li><li>a cosmetic that cleans the skin and constricts the pores.</li></ul>