fallacious vs spurious what difference

what is difference between fallacious and spurious



fallacy +‎ -ous.


  • IPA(key): /fə.ˈleɪ.ʃəs/
  • Rhymes: -eɪʃəs


fallacious (comparative more fallacious, superlative most fallacious)

  1. Characterized by fallacy; false or mistaken.
  2. Deceptive or misleading.

Usage notes

  • Nouns often used with “fallacious”: argument, reasoning, etc.

Related terms

  • fail
  • failure
  • fallacy
  • fallibilism
  • fallibilist
  • fallibility
  • fallible
  • false
  • falsifiable
  • falsification
  • falsificator
  • falsifier
  • falsify
  • falsity


See also

  • wrong
  • incorrect
  • illogical
  • deceiving
  • deceitful
  • misleading
  • delusive
  • illusive
  • illusory
  • erroneous
  • faulty
  • specious

Further reading

  • fallacious in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
  • fallacious in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
  • fallacious at OneLook Dictionary Search



Borrowed from Late Latin spurius (illegitimate, bastardly), possibly related to sperno or from Etruscan.


  • (Received Pronunciation) IPA(key): /ˈspjʊə.ɹi.əs/
  • (US) IPA(key): /ˈspjʊ.ɹi.əs/, /ˈspʊ.ɹi.əs/, /ˈspjɔ.ɹi.əs/
  • Rhymes: -ʊəɹiəs


spurious (comparative more spurious, superlative most spurious)

  1. False, not authentic, not genuine.
    His argument was spurious and had no validity.
    • 2013, Russell Brand, Russell Brand and the GQ awards: ‘It’s amazing how absurd it seems’ (in The Guardian, 13 September 2013)[1]
      We witness that there is a relationship between government, media and industry that is evident even at this most spurious and superficial level. These three institutions support one another. We know that however cool a media outlet may purport to be, their primary loyalty is to their corporate backers. We know also that you cannot criticise the corporate backers openly without censorship and subsequent manipulation of this information.
  2. Extraneous; stray; not relevant or wanted.
    I tried to concentrate on the matter in hand, but spurious thoughts kept intruding.
    Spurious emissions from the wireless mast were causing nearby electrical equipment to go haywire.
  3. (archaic) bastardly, illegitimate


  • (false): counterfeit, fake, false, bogus
  • See also Thesaurus:fake
  • See also Thesaurus:illegitimate


  • (false): genuine, representative

Derived terms

  • spuriosity
  • spuriously
  • spuriousness


See also

  • specious

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