disloyal
adjective /dɪsˈlɔɪəl/
/dɪsˈlɔɪəl/
- disloyal (to somebody/something) not loyal to (= not supporting) your friends, family, country, etc.
- He was accused of being disloyal to the government.
- a disloyal remark
- It was very disloyal of you to repeat what I’d said to Peter.
Word Originlate 15th cent.: from Old French desloial, from des- (expressing negation) + loial ‘loyal’.