abating
allaying
alleviating
alleviative
altering
ameliorating
analgesic
anesthetic
anodyne
assuaging
assuasive
balmy
balsamic
benumbing
blunting
bounding
cathartic
chastening
cleansing
cushioning
dampening
damping
deadening
demulcent
diminishing
dulling
easing
emollient
excusatory
extenuating
extenuatory
justifying
lenitive
lessening
limitative
limiting
mitigative
mitigatory
modificatory
modifying
modulatory
numbing
pain-killing
palliative