adjective; 1. Sharply incisive; pungent. 2. Medicine/Medical. Contracting; constrictive; styptic. 3. Harshly biting; caustic: his astringent criticism. 4. Stern or severe; austere.
noun: 1. Medicine/Medical. A substance that contracts the tissues or canals of the body, thereby diminishing discharges, as of mucus or blood. 2. A cosmetic that cleans the skin and constricts the pores.
Who knew astringent was an adjective? Here are some characters who could have used a strong astringent: