fallacious

F4A1L1L1A1C3I1O1U1S1
/fəˈleɪ.ʃəs/

adjective

Characterized by fallacy; false or mistaken.

UncommonScrabble 15

Meanings

adjectivefallacious (comparative more fallacious, superlative most fallacious)

comparative more fallacious · superlative most fallacious

  1. Characterized by fallacy; false or mistaken.

    There is a widely diffused notion that among all specimens of animal creation man alone possesses any glimmering of reason. This notion is largely fallacious. It is one of those ideas, based upon superficial knowledge, which appeal to the sophisticated modern public.

    1941, George Ryley Scott, Phallic Worship: A History of Sex and Sex Rites in Relation to the Religions of All Races from Antiquity to the Present Day, London: T. Werner Laurie, page 3

    Synonyms: erroneous, incorrect, wrong · Antonyms: accurate, correct, true

Synonyms & antonyms

adjectiveCharacterized by fallacy; false or mistaken.

adjectiveDeceptive or misleading.

More synonyms by meaning

adjectivecontaining or based on a fallacy

adjectiveinvolving deception

adjectivebased on an incorrect or misleading notion or information

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinfallācia
  2. Old Frenchfallacieux
  3. Englishfallacious

From Old French fallacieux (whence -acious), from Latin fallācia, from fallāx, from fallere.

Full word history & related roots →

Translations

Bulgarian погрешен, измамен
  • погрешен (pogrešen)characterized by fallacy; false or mistaken
  • измамен (izmamen)characterized by fallacy; false or mistaken
  • неверен (neveren)deceptive or misleading
  • лъжлив (lăžliv)deceptive or misleading
Chinese Mandarin 謬誤的 /谬误的
  • 謬誤的 /谬误的characterized by fallacy; false or mistaken
Dutch bedrieglijk
  • bedrieglijkcharacterized by fallacy; false or mistaken
Finnish virheellinen, paikkansapitämätön
  • virheellinencharacterized by fallacy; false or mistaken
  • paikkansapitämätöncharacterized by fallacy; false or mistaken
  • erheellinencharacterized by fallacy; false or mistaken
  • harhaanjohtavadeceptive or misleading
  • pettävädeceptive or misleading
  • erehdyttävädeceptive or misleading
French fallacieux
  • fallacieuxcharacterized by fallacy; false or mistaken
German irreführend, trügerisch
  • irreführenddeceptive or misleading
  • trügerischdeceptive or misleading
Irish fallásach
  • fallásachcharacterized by fallacy; false or mistaken
Latin falsus, fallāx
  • falsuscharacterized by fallacy; false or mistaken
  • fallāxdeceptive or misleading
Māori hāwatewate, tipatipa
  • hāwatewatecharacterized by fallacy; false or mistaken
  • tipatipacharacterized by fallacy; false or mistaken
Polish mylny, chybiony
  • mylnycharacterized by fallacy; false or mistaken
  • chybionycharacterized by fallacy; false or mistaken
Portuguese falacioso, erróneo
  • falaciosocharacterized by fallacy; false or mistaken
  • erróneodeceptive or misleading
Russian оши́бочный, ло́жный
  • оши́бочный (ošíbočnyj)characterized by fallacy; false or mistaken
  • ло́жный (lóžnyj)deceptive or misleading
  • обма́нчивый (obmánčivyj)deceptive or misleading
Spanish falaz
  • falazcharacterized by fallacy; false or mistaken
Swedish felaktig
  • felaktigcharacterized by fallacy; false or mistaken
Turkish yanlış, yanılgılı
  • yanlışcharacterized by fallacy; false or mistaken
  • yanılgılıcharacterized by fallacy; false or mistaken
  • aldatıcıdeceptive or misleading
  • yanıltıcıdeceptive or misleading

Rhymes & wordplay

Rhymes with fallacious

All rhymes →
Cite this entry
APA

fallacious. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/fallacious

MLA

“fallacious.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fallacious. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “fallacious,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/fallacious.

Source: fallacious on Wiktionary, CC BY-SA 4.0.