= When someone is angry at you, instead of getting angry back, you act extra nice to them. (This makes the person mad because they want to have an argument with you, but you won’t let them.)
Ex: When my wife yells at me, I always “kill her with kindness” by saying, “you’re always right sweety, I’m an idiot.”
Ex: People want you to argue back at them, so instead you should “kill them with kindness.” Then they become very frustrated.