sell sb down the river
informalDefinition
› to put someone in a difficult or dangerous situation by not acting as you had promised to act, usually in order to win an advantage for yourselfDisloyalty, betrayal and treason
(Definition of sell sb down the river from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)
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Synonyms and related words:
- backstabber noun
- betrayal noun
- break ranks idiom
- collaborate verb (SUPPORT AN ENEMY)
- collaboration noun (HELPING AN ENEMY)
- deserter noun
- desertion noun
- double-cross verb
- faithless adjective (NOT LOYAL)
- false adjective (NOT LOYAL)
- fifth column noun
- high treason noun
- quisling noun
- sellout noun (BROKEN PROMISE)
- stab sb in the back idiom
- traitor noun
- treachery noun
- treasonable adjective
- un-American adjective
- unfaithful adjective
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