Assuages

to make milder or less severe; relieve; ease; mitigate:
to assuage one’s grief; to assuage one’s pain.
to appease; satisfy; allay; relieve:
to assuage one’s hunger.
to soothe, calm, or mollify:
to assuage his fears; to assuage her anger.
Historical Examples

And to the end the foresight which guards will be as true a friend to the soldier as the kindness which assuages his pains.
The Atlantic Monthly, Volume 15, No. 88, February, 1865 Various

Their money cannot buy all they enjoy, and God knows how much of their sorrow it assuages.
Balcony Stories Grace E. King

This word alone sustains and nourishes her, and assuages all her pain.
Four Arthurian Romances Chretien DeTroyes

It assuages and comforts beyond measure for the sufferer to know that he does not suffer alone, but with a great multitude.
Epistle Sermons, Vol. III Martin Luther

But even this suffering is sweet to him: for Love, who conducts and leads him on, assuages and relieves the pain.
Four Arthurian Romances Chretien DeTroyes

It is that which assuages the grief of a soldier for a dead comrade, or soon ousts it altogether from his mind.
The Irish on the Somme Michael MacDonagh

Patience is often displeasing, but it assuages heavy hearts, and quenches malice.
Early English Alliterative Poems Various

verb (transitive)
to soothe, moderate, or relieve (grief, pain, etc)
to give relief to (thirst, appetite, etc); satisfy
to pacify; calm
v.

c.1300, from Anglo-French assuager, Old French assoagier “soften, moderate, alleviate, calm, soothe, pacify,” from Vulgar Latin *adsuaviare, from Latin ad- “to” (see ad-) + suavis “sweet, agreeable” (see sweet). For sound development in French, cf. deluge from Latin diluvium, abridge from abbreviare. Related: Assuaged; assuaging.