pal·li·ate 
(pălē-āt′)
(pălē-āt′)tr.v. pal·li·at·ed, pal·li·at·ing, pal·li·ates
1.
a. To make less severe or intense; mitigate. See Synonyms at relieve.
b. To alleviate the symptoms of (a disease or disorder).
2. To make (an offense or crime) seem less serious; extenuate.
[Middle English palliaten, from Late Latin palliāre, palliāt-, to cloak, palliate, from Latin pallium, cloak.]
pal′li·ation n.
palli·a′tor n.