- disloyalty (n.)
[disloyalty 词源字典]
- early 15c., from Middle French desloyaulte, from Old French desloiaute, desleauté "disloyalty, faithlessness, marital infidelity," from desloial (see disloyal). Especially of allegiance to a state or sovereign since c. 1600.[disloyalty etymology, disloyalty origin, 英语词源]