as ‧ suage /əˈsweɪdʒ/ BrE AmE verb [transitive] literary
[ Date: 1200-1300 ; Language: Old French ; Origin: assouagier , from Vulgar Latin assuaviare , from Latin ad- 'to' + suavis 'sweet' ]
to make an unpleasant feeling less painful or severe SYN relieve :
Nothing could assuage his guilt.