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    per·fid·i·ous
    [pərˈfidēəs]
    adjective
    literary
    perfidious (adjective)
    1. deceitful and untrustworthy:
      "a perfidious lover"
    Origin
    mid 16th century: from Latin perfidiosus, from perfidia ‘treachery’.
    Translate perfidious to
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    Similar and Opposite Words
    adjective
    1. deceitful and untrustworthy:
      treacherous
      duplicitous
      deceitful
      disloyal
      faithless
      unfaithful
      traitorous
      treasonous
      false
      untrue
      double-dealing
      dishonest
      two-faced
      Janus-faced
      untrustworthy
      false-hearted
      double-faced
      Punic
      truthless
      Opposite:
      faithful
      loyal
     
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  1. Merriam Webster
    https://www.merriam-webster.com › dictionary › perfidious

    Perfidious Definition & Meaning - Merriam-Webster

     
  2. Cambridge Dictionary
    https://dictionary.cambridge.org › dictionary › english › perfidious

    PERFIDIOUS | English meaning - Cambridge Dictionary

  4. Cambridge Dictionary
    https://dictionary.cambridge.org › us › dictionary › english › perfidious

    PERFIDIOUS | definition in the Cambridge English Dictionary

  5. Collins Dictionary
    https://www.collinsdictionary.com › dictionary › english › perfidious

    PERFIDIOUS definition and meaning | Collins English Dictionary

  6. Vocabulary.com
    https://www.vocabulary.com › dictionary › perfidious

    Perfidious - Definition, Meaning & Synonyms - Vocabulary.com

  7. People also ask
    What does perfidious mean?
    Get a quick, free translation! PERFIDIOUS definition: 1. unable to be trusted, or showing no loyalty: 2. unable to be trusted, or showing no loyalty: . Learn more.

    PERFIDIOUS | English meaning - Cambridge Dictionary

    dictionary.cambridge.org
    What is fibrosis?

    Dr. Himabindu Sreenivasulu

    MBBS · 1 years of exp

    Fibrosis is when healthy tissue is replaced by excessive connective tissue, causing organs to become stiff and less functional. It's a result of prolonged inflammation or injury, and it can impact various organs, like the liver or lungs. Fibrosis can limit organ function over time, affecting overall health. Early detection and management of underlying causes are important to prevent further tissue damage and preserve organ function.
    Q&A: Fibrosis
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    What does perfidious mean in Shakespeare?
    English speakers have used "perfidious" to mean "treacherous" since at least 1572. One of the earliest known uses of the term can be found in Act V, scene iii of Shakespeare’s All's Well That Ends Well: the "perfidious slave" Parolles is thought to be an unreliable witness; he’ll say whatever suits his purpose, whether true or not.

    Perfidious Definition & Meaning - Merriam-Webster

    merriam-webster.com
    What does perfidy mean?
    deliberately faithless; treacherous; deceitful. [1590–1600; < Latin perfidiōsus faithless, dishonest. See perfidy, -ous] per•fid′i•ous•ness, n. Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

    Perfidious - definition of perfidious by The Free Dictionary

    thefreedictionary.com
    What is the history of perfidious?
    We wouldn't lie to you about the history of "perfidious" - even though the word itself suggests deceitfulness. The modern English meaning of "perfidious" remains faithful to that of its Latin ancestor, perfidus, which means "faithless." English speakers have used "perfidious" to mean "treacherous" since at least 1572.

    Perfidious Definition & Meaning - Merriam-Webster

    merriam-webster.com
    What does it mean if someone accuses you of being perfidious?
    If someone accuses you of being perfidious, you should probably be offended — it means underhanded, treacherous, deceitful — even evil. If you betray people often, you're perfidious: traitors are extremely perfidious. Besides betrayal, this word implies lying and maybe other kinds of awful behavior, like stealing and taking bribes.

    Perfidious - Definition, Meaning & Synonyms - Vocabulary.com

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  8. The Free Dictionary
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    Perfidious - definition of perfidious by The Free Dictionary

  9. Dictionary
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    PERFIDIOUS Definition & Meaning - Dictionary.com

  10. Oxford Learner's Dictionaries
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    perfidious adjective - Definition, pictures, pronunciation and usage ...

  11. Britannica
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    Perfidious Definition & Meaning | Britannica Dictionary

  12. Collins Dictionary
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    PERFIDIOUS - Definition & Translations | Collins English Dictionary

  13. Oxford English Dictionary
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    perfidious, adj. meanings, etymology and more - Oxford English …

  14. Wiktionary
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    perfidious - Wiktionary, the free dictionary

  15. Your Dictionary
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    Perfidious Definition & Meaning - YourDictionary

  16. Wordnik
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    perfidious - definition and meaning - Wordnik

  17. WordReference
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    perfidious - WordReference.com Dictionary of English

  18. Collins Dictionary
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    PERFIDIOUS definition in American English - Collins Online …

  19. Longman Dictionary of Contemporary English Online
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    perfidious | meaning of perfidious in Longman Dictionary of ...

  20. Definitions.net
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    What does perfidious mean? - Definitions.net

  21. Collins Dictionary
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    PERFIDIOUS - Meaning & Translations | Collins English Dictionary