palliate

Concise Oxford English Dictionary © 2008 Oxford University Press:
palliate /ˈpalɪeɪt/

▶verb

• 1 make (the symptoms of a disease) less severe without removing the cause.

• 2 mitigate or disguise (something bad).

– derivatives
palliation noun,
palliator noun.

– origin ME: from late L. palliat-, palliare ‘to cloak’, from pallium ‘cloak’.