Definition of disloyal adjective from the Oxford Advanced American Dictionary

 

disloyal

 adjective
adjective
NAmE//dɪsˈlɔɪəl//
 
disloyal (to somebody/something)
 
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not loyal or faithful to 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 said to Peter.
NAmE//dɪsˈlɔɪəlti//
 
noun [uncountable] She felt guilty of disloyalty to her dead husband.
See the Oxford Advanced Learner's Dictionary entry: disloyal