deadening Synonyms

boring tiresome wearisome slow impairment stultification irksome dull tedious constipation silencing reduction quieting paralyzing desensitizing numbing numb narcotic muting mute muffling somnific soothe painkilling ho-hum desensitize quieten painkiller analgesic soporiferous suppress subduement subduing stupefying stupefactive stupefacient stifle muffle mitigation mitigate dampening damping damp cushioning blunting blunt benumbing befooling attenuation anesthetic