renegation
/ˌrɛnɪˈɡeɪʃən/Definitions
1. noun
The act of going back on a promise or agreement, or the state of being unfaithful or disloyal.
“The renegation of the treaty led to a breakdown in diplomatic relations between the two countries.”
2. noun
A person who has gone back on a promise or agreement, or who is unfaithful or disloyal.
“The renegation of the former employee was a major scandal in the industry.”