[{"Bold_text": "verb (used with object)", "List Items": ["to make less sensitive, active, energetic, or forcible; weaken:to deaden sound; to deaden the senses; to deaden the force of a blow.Synonyms: dull , numb , lessen , diminish , blunt", "to lessen the velocity of; retard:to deaden the headway of a ship.", "to make impervious to sound, as a floor."]}, {"Bold_text": "verb (used without object)", "List Items": ["to become dead ."]}]