turncoat
🇺🇸
/ˈtɜːrnkəʊt/
🇬🇧
/ˈtɜːnkəʊt/
someone who changes sides or betrays their beliefs for personal gain
When John switched political parties, his former colleagues accused him of being a turncoat.
当约翰转换政治党派时,他的前同事指责他是叛徒。