-alienateonepersonfromanother;castabonebetween...;driveawedgebetween...;fomentdisunityanddissension;incite[pit]oneagainsttheother;makemischiefbetween...;playoffonepersonagainstanother;playthemoffoneagainsttheother;setonepersonbytheears;sowdiscord(among...);sowdissensionamong...;sowdissensionbymeansof...