soften up

US /ˈsɑːf.ən ʌp/
UK /ˈsɑːf.ən ʌp/
"soften up" picture
1.

to make someone feel more friendly, less angry, or more willing to help

:
He tried to soften up the boss before asking for a raise.
A little flattery can often soften up even the toughest critics.
2.

to make something less hard or firm

:
You need to knead the dough to soften it up before baking.
The rain helped to soften up the dry ground.