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Definition of fallacious
fallaciously
adverbfallaciousness
nounRead the Latest from M-W
fallacious was our Word of the Day on 03/17/2012. Hear the podcast!
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Examples of fallacious in a Sentence
it's fallacious to say that something must exist because science hasn't proven its nonexistence
consumers who harbor the fallacious belief that credit-card spending will never catch up with them
Recent Examples of fallacious from the Web
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Facts and reason have to square off against the fanciful and the fallacious.
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Clinton’s fallacious claims about 2016 sound comical.
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Problem is, the water ice on Pluto is mixed up with ices of methane, nitrogen, and carbon monoxide—which kind of hides the actual H2O. The image to the left shows this fallacious five o’clock shadow of water ice.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fallacious'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Did You Know?
Oh what a tangled web we weave / When first we practise to deceive! So wrote Sir Walter Scott in his 1808 poem Marmion. Scott’s line wasn't written with etymology in mind, but it might be applied to the history of "fallacious." That word traces back to the Latin verb fallere ("to deceive"), but it passed through a tangle of Latin and French forms before it eventually made its way into English in the early 1500s. Other descendants of "fallere" in English include "fail," "false," and "fault."
First Known Use of fallacious
1509
Other Logic Terms
FALLACIOUS Defined for English Language Learners
fallacious
playDefinition of fallacious for English Language Learners
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: containing a mistake : not true or accurate
Learn More about fallacious
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See words that rhyme with fallacious Thesaurus: All synonyms and antonyms for fallacious Spanish Central: Translation of fallacious Nglish: Translation of fallacious for Spanish speakers Britannica English: Translation of fallacious for Arabic speakers
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