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1. Dictionary

   Treach·er·ous

   /ˈtreCH(ə)rəs/

   

   adjective

   • 1. guilty of or involving betrayal or deception: "a treacherous Gestapo agent" Similar traitorousdisloyalperfidiousfaithlessunfaithfulduplicitousfalse-hearteddeceitfulfalseuntruebackstabbingdouble-crossingdouble-dealingtwo-facedJanus-faceduntrustworthyunreliableundependablefickleapostaterenegadesubversiveseditiousrebelliousmutinousbreakawaytreasonabletreasonousinformal:two-timingrare:PunicOpposite loyalfaithful
   • ▪ (of ground, water, conditions, etc.) hazardous because of presenting hidden or unpredictable dangers: "a vacationer was swept away by treacherous currents" Similar dangeroushazardousperilousunsafeprecariousriskydeceptiveunreliableundependableunstableicyice-coveredslipperyglassyinformal:diceyhairyslippygnarlyOpposite safereliable

   Word Origin Middle English (in treacherous (sense 1 of the adjective)): from Old French trecherous, from trecheor ‘a cheat’, from trechier ‘to cheat’.

   Derivatives

   • 1. treacherously adverb
   • 2. treacherousness noun

   Scrabble Points: 16

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2. www.dictionary.com › browse › treacherousTREACHEROUS Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › treacherous

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   Treacherous definition: characterized by faithlessness or readiness to betray trust; traitorous. . See examples of TREACHEROUS used in a sentence.

3. www.collinsdictionary.com › dictionary › englishTREACHEROUS definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   May 4, 2024 · 2 meanings: 1. betraying or likely to betray faith or confidence 2. unstable, unreliable, or dangerous.... Click for more definitions.

4. www.vocabulary.com › dictionary › treacherousTreacherous - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › treacherous

   treacherous: 1 adj dangerously unstable and unpredictable “ treacherous winding roads” Synonyms: unreliable dangerous , unsafe involving or causing danger or risk; liable to hurt or harm adj tending to betray “the fiercest and most treacherous of foes” “ treacherous intrigues” Synonyms: perfidious , punic unfaithful not true to duty or ...

5. www.thefreedictionary.com › treacherousTreacherous - definition of treacherous by The Free Dictionary

   www.thefreedictionary.com › treacherous

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   Define treacherous. treacherous synonyms, treacherous pronunciation, treacherous translation, English dictionary definition of treacherous. adj. 1. Guilty of or characterized by betrayal of confidence or trust; perfidious.

6. www.oxfordlearnersdictionaries.com › definition › englishtreacherous adjective - Definition, pictures, pronunciation and...

   www.oxfordlearnersdictionaries.com › definition › english

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   Definition of treacherous adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

7. www.collinsdictionary.com › us › dictionaryTREACHEROUS definition in American English | Collins English...

   www.collinsdictionary.com › us › dictionary

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   3 days ago · If you describe someone as treacherous, you mean that they are likely to betray you and cannot be trusted. [disapproval] He publicly left the party and denounced its treacherous leaders. Synonyms: disloyal, deceitful, untrustworthy, duplicitous More Synonyms of treacherous. 2.

8. dictionary.cambridge.org › dictionary › learner-englishTREACHEROUS | meaning - Cambridge Learner's Dictionary

   dictionary.cambridge.org › dictionary › learner-english

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   TREACHEROUS definition: 1. very dangerous, especially because of bad weather conditions: 2. If someone is treacherous…. Learn more.