dulling (?.)

• abating
• allaying
• alleviating
• alleviative
• analgesic
• anesthetic
• anodyne
• assuaging
• assuasive
• balmy
• balsamic
• benumbing
• blunting
• cathartic
• chastening
• cleansing
• cushioning
• dampening
• damping
• deadening
• demulcent
• diminishing
• easing
• emollient
• lenitive
• lessening
• mitigating
• mitigative
• narcotic
• numbing
• pain-killing
• palliative
• purgative
• reducing
• relaxing
• relieving
• remedial
• softening
• soothing
• stunning
• stupefying
• subduing
• tempering