mit·i·gate \MIT-i-geyt\
verb
1. To lessen in force or intensity, as wrath, grief, harshness, or pain; moderate.
2. To make less severe: to mitigate a punishment.
3. To make (a person, one’s state of mind, disposition, etc.) milder or more gentle; mollify; appease.
4. To become milder; lessen in severity.