Other forms: desisted; desisting; desists
You can use the verb desist as a way to say "stop" or "cease." Instead of yelling "Cut it out!" the new neighbor asked the tween girls to desist from playing any more loud, screeching music from that long-haired boy-band.
If you want to insist that someone stop doing something, the word desist is a solid choice. It's often used as part of a legal order called a "cease and desist," which forces an action to come to a halt. "Cease" is a synonym for desist, so using the two together says "stop it!" loud and clear — and kind of redundantly. While cease often goes hand in hand with it, desist, can also be followed by from in the form another command: "Desist from camping on the lawn of your favorite singer's home so you won't be arrested."