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1. Dictionary

   treacherous

   /ˈtrɛtʃ(ə)rəs/

   adjective

   • 1. guilty of or involving betrayal or deception: "a treacherous Gestapo agent" Similar traitorousdisloyalperfidiousfaithlessunfaithfulduplicitousfalse-hearteddeceitfulfalseuntrueback-stabbingdouble-crossingdouble-dealingtwo-facedJanus-faceduntrustworthyunreliableundependablefickleapostaterenegadesubversiveseditiousrebelliousmutinousbreakawaytreasonabletreasonousinformal:two-timingrare:PunicOpposite loyalfaithful
   • 2. (of ground, water, conditions, etc.) presenting hidden or unpredictable dangers: "a holidaymaker 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. dictionary.cambridge.org › dictionary › englishTREACHEROUS | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   TREACHEROUS definition: 1. If the ground or sea is treacherous, it is extremely dangerous, especially because of bad…. Learn more.

3. www.merriam-webster.com › dictionary › treacherousTreacherous Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › treacherous

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   The meaning of TREACHEROUS is likely to betray trust : unreliable. How to use treacherous in a sentence. Synonym Discussion of Treacherous.

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

   www.collinsdictionary.com › dictionary › english

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   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. The President spoke of the treacherous intentions of the enemy. Synonyms: disloyal, deceitful, untrustworthy, duplicitous More Synonyms of treacherous.

5. www.oxfordlearnersdictionaries.com › english › treacheroustreacherous adjective - Definition, pictures, pronunciation and...

   www.oxfordlearnersdictionaries.com › english › treacherous

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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.

6. dictionary.cambridge.org › learner-english › treacherousTREACHEROUS | meaning - Cambridge Learner's Dictionary

   dictionary.cambridge.org › learner-english › treacherous

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

7. dictionary.cambridge.org › us › dictionaryTREACHEROUS | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › us › dictionary

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   (of the ground or the sea) extremely dangerous, esp. because of bad weather conditions: Freezing rain made driving treacherous. treacherous adjective (NOT LOYAL) (of a person) guilty of deceiving someone who trusts you: He was treacherous, or at least sneaky.

8. www.yourdictionary.com › treacherousTreacherous Definition & Meaning | YourDictionary

   www.yourdictionary.com › treacherous

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   Treacherous definition: Guilty of or characterized by betrayal of confidence or trust; perfidious.