Synonyms for deaden

verb

1. To reduce life or the evidence of life

   blunt, impair, dull, numb, desensitize, repress, slow, paralyze, anesthetize, drug, chloroform, gas, freeze, narcotize, etherize, put to sleep, make unfit, knock out, daze, benumb, incapacitate, depress, stupefy, stun, smother, stifle, suppress, frustrate, weaken, devitalize, injure, exhaust, tire, retard, knock stiff*, KO*, lay out*, dope*, put out of order*, take the edge off*; see also drug, weaken 2.

   Antonyms animate*, revitalize, invigorate.

2. To soften

   tone down, dim, muffle, mute, dull, dampen, cushion; see also decrease 2, soften 2.