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.
他與我們競爭對手的秘密會面明顯背叛了我們團隊的信任。