break/keep faith with somebody

break faith with (someone or something)

To fail to act as one has promised. After promising so much, the candidate will be in danger of breaking faith with the many groups she courted on the campaign trail.
See also: break, faith

keep faith with (someone or something)

To maintain loyalty to someone or something; to keep one's promises. Do you trust Ralph? Do you think he'll be able to keep faith with us when people start pressuring him to do the opposite?
See also: faith, keep

break/keep ˈfaith with somebody

break/keep a promise that you have made to somebody; stop/continue being loyal to somebody: The government claims they have kept faith with the people by reducing the crime rate.
See also: break, faith, keep, somebody