attenuate
/ə-ˈten-yə-ˌwāt/
verb
to lessen the amount, force, magnitude, or value of : weaken
to reduce the severity, virulence, or vitality of
to make thin or slender
… shows great skill in the use of language to moderate or attenuate the impact of awkward facts.
adjective
reduced especially in thickness, density, or force
tapering gradually usually to a long slender point
the attenuate limbs of a starving person