disloyalty
/dɪsˈlɔɪəlti/
noun
- The quality or state of not being faithful or loyal to a person, group, country, or cause.
- Disloyalty in a team can destroy morale and lead to failure.
- She could not forgive her friend's disloyalty after years of trust.
- The spy was executed for his disloyalty to the nation.
Synonyms