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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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   deceptive, untrustworthy, or unreliable. Synonyms: deceitful. Antonyms: reliable. unstable or insecure, as footing. dangerous; hazardous: a treacherous climb. treacherous. / ˈtrɛtʃərəs / adjective. betraying or likely to betray faith or confidence. unstable, unreliable, or dangerous. treacherous weather. treacherous ground. Discover More.

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

   www.vocabulary.com › dictionary › treacherous

   Treacherous means either not trusted or dangerous. A treacherous road might be icy or otherwise likely to cause a car accident. A treacherous friend will betray you. Treachery refers to harmful acts you might do to someone who trusts you. It can also refer to being disloyal to your native country, but the word treason is more common in this sense.

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

   www.collinsdictionary.com › us › dictionary

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   5 days ago · 1. adjective. 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. adjective.

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

   www.oxfordlearnersdictionaries.com › definition › english

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   dangerous, especially when seeming safe. The ice on the roads made driving conditions treacherous. 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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   very dangerous, especially because of bad weather conditions: Ice had made the roads treacherous. treacherous adjective (NOT LOYAL) If someone is treacherous, they deceive people who trust them. (Definition of treacherous from the Cambridge Learner's Dictionary © Cambridge University Press) Translations of treacherous. in Chinese (Traditional)

7. www.dictionary.com › browse › treacherous%C2%A0TREACHEROUS Definition & Usage Examples | Dictionary.com

   www.dictionary.com › browse › treacherous%C2%A0

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   Treacherous definition: . See examples of TREACHEROUS used in a sentence.

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

   www.thefreedictionary.com › treacherous

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   1. characterized by faithlessness or readiness to betray trust. 2. deceptive, untrustworthy, or unreliable. 3. unstable or insecure, as footing. 4. dangerous; hazardous: a treacherous climb. treach′er•ous•ly, adv. treach′er•ous•ness, n.