disloyalty
🇺🇸
/dɪsˈlɔɪəlti/
🇬🇧
/dɪsˈlɔɪəlti/
When someone doesn't support or betrays the ones they should be loyal to.
The employee's disloyalty to the company was evident when he shared confidential information with a competitor.
员工对公司的不忠在向竞争对手共享机密信息时表现得很明显。