Dictionary.com

fallacious

[ fuh-ley-shuhs ]
/ fəˈleɪ ʃəs /
See synonyms for: fallacious / fallaciousness on Thesaurus.com

adjective

containing a fallacy; logically unsound: fallacious arguments.
deceptive; misleading: fallacious testimony.
disappointing; delusive: a fallacious peace.

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seclusion
a false belief or opinion.
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Origin of fallacious

First recorded in 1500–10, fallacious is from the Latin word fallāciōsus deceitful, deceptive. See fallacy, -ous

OTHER WORDS FROM fallacious

Words nearby fallacious

Falkland Islands Dependencies, Falkner, fall, fal la, fall about, fallacious, fallacy, fallacy of composition, fallacy of division, fallacy of many questions, fallal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Words related to fallacious

deceptive, delusive, erroneous, fictitious, fishy, fraudulent, illogical, illusory, incorrect, invalid, irrational, mad, misleading, mistaken, off, phony, spurious, unfounded, unreal, unreasonable

Example sentences from the Web for fallacious

British Dictionary definitions for fallacious

fallacious
/ (fəˈleɪʃəs) /

adjective

containing or involving a fallacy; illogical; erroneous
tending to mislead
delusive or disappointinga fallacious hope

Derived forms of fallacious

fallaciously, adverbfallaciousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012