It will come as no surprise that fallacious is related to the noun fallacy, meaning “delusion” or “falsehood.” Both words come from the Latin word fallacia, which in turn comes from fallere, meaning “to deceive.” (Other descendants of fallere in English include fail, false, and fault.)

2 days ago - Both may actually be true or may ... does not follow from the premises in the manner described. Even non-deductive arguments can be said to be fallacious: for example, an inductive argument that incorrectly applies principles of probability or causality. But "since deductive arguments depend on formal properties and inductive arguments don't, formal fallacies apply only to deductive arguments". A logical form such as "A and B" is independent of any particular conjunction of meaningful ...

Something fallacious is a mistake that comes from too little information or unsound sources. Predictions that the whole state of California will snap off from the rest of North America and float away have proven to be fallacious — for now, anyway.

FALLACIOUS definition: containing a fallacy; logically unsound. See examples of fallacious used in a sentence.

FALLACIOUS meaning: 1. not correct: 2. not correct: . Learn more.

FALLACIOUS meaning: containing a mistake not true or accurate

3 meanings: 1. containing or involving a fallacy; illogical; erroneous 2. tending to mislead 3. delusive or disappointing.... Click for more definitions.

Define fallacious. fallacious synonyms, fallacious pronunciation, fallacious translation, English dictionary definition of fallacious. adj. 1. Containing or based on a fallacy: a fallacious assumption. 2. Tending to mislead; deceptive: fallacious ...

The vast majority of the commonly identified fallacies involve arguments, although some involve only explanations, or definitions, or questions, or other products of reasoning. Some researchers, although not most, use the term “fallacy” very broadly to indicate any false belief or cause of a false belief.

Nonfallacious definition: Not fallacious.

Fallacious definition: Containing or based on a fallacy.

Tips: For the word fallacious, think "false." Fallacious can simply mean false or not correct, but is usually used to describe someone being deceptively false. Also, think of the related word fallacy, which is a misconception or a false belief. If someone is being fallacious, that person is ...

Fallacious is a formal word that typically describes something, such as an argument or assumption, that is false or inaccurate and that tends to mislead or deceive others. // The notion that disease is caused by malign spirits was known to be ...

as in unreasonable not using or following good reasoning it's fallacious to say that something must exist because science hasn't proven its nonexistence · Synonyms & Similar Words · Relevance · unreasonable · irrational · unreasoning · ...

There are five meanings listed in OED's entry for the adjective fallacious, one of which is labelled obsolete.

April 22, 2025 - Imagine hearing a persuasive argument that feels right, only to discover it was based on faulty reasoning—that is the essence of “fallacious.” “Fallacious” describes beliefs or arguments that seem credible but are misleading or incorrect.

1. Deceptive; deceiving; deceitful; ... proposition; a fallacious appearance. 2. Deceitful; false; not well founded; producing disappointment; mocking expectation; as a fallacious hope....

Fallacious · fal·la·ci·ous · Share Word · Add to Favorites · View All Favorites · Definition/Meaning · (adjective) Containing or based on a fallacy; misleading or deceptive. e.g. The politician's fallacious argument was easily debunked by fact-checkers.

From Longman Dictionary of Contemporary Englishfallaciousfal‧la‧cious /fəˈleɪʃəs/ adjective formal WRONG/INCORRECTcontaining or based on false ideas Such an argument is misleading, if not wholly fallacious.

May 12, 2004 - fallacious: Function: adjective 1 : embodying a fallacy 2 : tending to deceive or mislead : DELUSIVE - fal·la·cious·ly adverb - fal·la·cious·ness noun...