deaden

convert (metallic mercury) into a grey powder consisting of minute globules, as by shaking with chalk or fatty oil

make less lively, intense, or vigorous

become lifeless, less lively, intense, or active

make vague or obscure or make (an image) less visible

lessen the momentum or velocity of

make vapid or deprive of spirit

cut a girdle around so as to kill by interrupting the circulation of water and nutrients