betrayal
🇺🇸
/bɪˈtreɪəl/
🇬🇧
/bɪˈtreɪəl/
the act of breaking someone's trust or being disloyal
His secret meeting with our rivals was a clear betrayal of our team's trust.
他与我们竞争对手的秘密会面明显背叛了我们团队的信任。