traitornoun [ C ]
uk/ˈtreɪ.tər/us/ˈtreɪ.t̬ɚ/disapprovinga person who is not loyal or stops being loyal to their own country, social class, beliefs, etc.:
The leaders of the rebellion were hanged as traitors.
The Chinese Communist Party branded (= called) Mr Gorbachev "a traitor to socialism".
Thesaurus: synonyms and related words
Disloyalty, betrayal & treason
- adultery
- backstabber
- betray
- betrayal
- break ranks idiom
- collaborate
- deserter
- desertion
- double-cross
- faithless
- false
- fifth column
- high treason
- sell sb down the river idiom
- sellout
- stab
- stab sb in the back idiom
- treacherous
- treachery
- treason
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traitorous
adjective uk/ˈtreɪ.tər.əs/us/ˈtreɪ.t̬ɚ.əs/formal disapproving