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   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. People also ask

   What does treacherous mean?

   • Get a quick, free translation! TREACHEROUS definition: 1. If the ground or sea is treacherous, it is extremely dangerous, especially because of bad…. Learn more.

   TREACHEROUS | English meaning - Cambridge Dictionary

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   What does treason mean in English?

   • 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.

   Treacherous - Definition, Meaning & Synonyms | Vocabulary.com

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   What does treachery mean?

   • 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. Treachery is from Middle English trecherie, from Old French, from trichier "to trick or cheat."

   Treacherous - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com/dictionary/treacherous

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   What is the difference between treacherous and perfidious?

   • treacherous implies readiness to betray trust or confidence. perfidious adds to faithless the implication of an incapacity for fidelity or reliability. a treacherous act of betrayal They were not prepared to hike over such treacherous terrain. The snow made their hike all the more treacherous.

   Treacherous Definition & Meaning - Merriam-Webster

   www.merriam-webster.com/dictionary/treacherous

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3. dictionary.cambridge.org › english › treacherousTREACHEROUS | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › english › treacherous

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   Treacherous means extremely dangerous, especially because of bad weather conditions, or not loyal to someone who trusts you. Learn more about the word, its synonyms, antonyms, and usage with examples from the Cambridge Dictionary.

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

   www.merriam-webster.com › dictionary › treacherous

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   Treacherous means untrue to what should command one's fidelity or allegiance, or providing insecure footing or support. See synonyms, examples, word history, and related entries for treacherous.

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6. 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.

7. www.collinsdictionary.com › english › treacherousTREACHEROUS definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › english › treacherous

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   Treacherous means betraying, disloyal, or untrustworthy, or very dangerous and unpredictable. Learn the synonyms, pronunciation, examples, and word origin of treacherous from Collins English Dictionary.

8. dictionary.cambridge.org › english › treacherousTREACHEROUS | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › english › treacherous

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   Treacherous means extremely dangerous, especially because of bad weather conditions, or not loyal, especially to someone who trusts you. Learn more about the word, its synonyms, antonyms, and usage with examples from various sources.

9. 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.

10. www.oxfordlearnersdictionaries.com › definitiontreacherous adjective - Definition, pictures, pronunciation ...

    www.oxfordlearnersdictionaries.com › definition

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    Treacherous means that someone or something cannot be trusted or intends to harm you. Learn how to use this adjective with synonyms, collocations and word origin.