disloyaladjective
uk/ˌdɪsˈlɔɪ.əl/us/ˌdɪsˈlɔɪ.əl/C2 not supporting someone that you should support:
His sisters thought that his autobiography was disloyal to the family.
Opposite
loyal
Thesaurus: synonyms and related words
Disloyalty, betrayal & treason
- adultery
- backstabber
- betray
- betrayal
- break ranks idiom
- collaborate
- deserter
- desertion
- faithless
- false
- fifth column
- high treason
- inconstant
- sellout
- stab
- stab sb in the back idiom
- traitor
- treacherous
- treachery
- treason
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disloyalty
noun [ U ] uk/ˌdɪsˈlɔɪ.əl.ti/us/ˌdɪsˈlɔɪ.əl.ti/
They accused her of disloyalty.