soften

verb

1. make (images or sounds) soft or softer
2. lessen in force or effect"soften a shock"
3. give in, as to influence or pressure
4. protect from impact"cushion the blow"
5. make less severe or harsh"He moderated his tone when the students burst out in tears"
6. make soft or softer"This liquid will soften your laundry"
7. become soft or softer"The bread will soften if you pour some liquid on it"