deaden

(v) make vague or obscure or make (an image) less visible
- muffle the message
damp, dampen,
(v) cut a girdle around so as to kill by interrupting the circulation of water and nutrients
- girdle the plant
girdle,
(v) make vapid or deprive of spirit
- deadened wine
(v) lessen the momentum or velocity of
- deaden a ship's headway
(v) become lifeless, less lively, intense, or active; lose life, force, or vigor
(v) make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation
- Terror blunted her feelings
- deaden a sound
blunt,
(v) convert (metallic mercury) into a grey powder consisting of minute globules, as by shaking with chalk or fatty oil

damp dampen girdle blunt

liven liven up enliven animate invigorate

deadly

deadened deadening