[{"Bold_text": "adjective", "List Items": ["Medicine/Medical.contracting; constrictive; styptic.", "harshly biting; caustic:his astringent criticism.Synonyms: rigorous , harsh , sharp", "stern or severe; austere.Synonyms: rigorous , harsh , sharp", "sharply incisive; pungent:astringent wit."]}, {"Bold_text": "noun", "List Items": ["Medicine/Medical.a substance that contracts the tissues or canals of the body, thereby diminishing discharges, as of mucus or blood.", "a cosmetic that cleans the skin and constricts the pores."]}]