fallacious
/fə-lā′shəs/
adjective
- intended to deceive fallacious testimony
- containing or based on a fallacy an unsound argument
- based on an incorrect or misleading notion or information
Merriam-Webster
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FALLACIOUS Definition & Meaning - Merriam-Webster
fallacious adjective · fal·la·cious fə-ˈlā-shəs · 1 · : containing a fallacy · a fallacious argument · 2 · : leading in a wrong direction or into a mistaken action or belief · fallaciously adverb · fallaciousness noun · ...
Vocabulary.com
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Fallacious - Definition, Meaning & Synonyms | Vocabulary.com
Definitions of fallacious · adjective containing or based on a fallacy · “fallacious reasoning” · synonyms: unsound · invalid · having no cogency or legal force · adjective based on an incorrect or misleading notion or information · ...
Cambridge Dictionary
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FALLACIOUS | definition in the Cambridge English Dictionary
5 days ago - fallacious adjective, at fallacy See all meanings · Word of the Day · pollen · UK · Your browser doesn't support HTML5 audio · /ˈpɒl.ən/ US · Your browser doesn't support HTML5 audio · /ˈpɑː.lən/ a powder, produced by the male part of a flower, that causes the female part of the same type of flower to produce seeds.
Cambridge Dictionary
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FALLACY | definition in the Cambridge English Dictionary
[ + that clause ] It is a common fallacy that only men are good at math. adjective [ not gradable ] us · Your browser doesn't support HTML5 audio · /fəˈleɪ·ʃəs/ a fallacious argument (Definition of fallacy from the Cambridge Academic ...
Dictionary.com
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FALLACIOUS Definition & Meaning | Dictionary.com
fallaciousness noun · nonfallacious adjective · nonfallaciously adverb · nonfallaciousness noun · unfallacious adjective · unfallaciously adverb · First recorded in 1500–10, fallacious is from the Latin word fallāciōsus deceitful, deceptive. See fallacy, -ous ·
Oxford Learner's Dictionaries
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fallacious adjective - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com
Definition of fallacious adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
Oxford English Dictionary
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fallacious, adj. meanings, etymology and more | Oxford English Dictionary
Etymons: French fallacieux. ... The earliest known use of the adjective fallacious is in the Middle English period (1150—1500).
Collins Dictionary
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FALLACIOUS definition in American English | Collins English Dictionary
adjective · If an idea, argument, or reason is fallacious, it is wrong because it is based on a fallacy. [formal] Their main argument is fallacious. Synonyms: incorrect, wrong, mistaken, false More Synonyms of fallacious · You may also like ...
YourDictionary
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Fallacious Definition & Meaning | YourDictionary
adjective · Containing a fallacy; erroneous. Fallacious reasoning. Webster's New World · Similar definitions · Misleading or deceptive. Webster's New World · Similar definitions · Causing disappointment; delusive. Webster's New World · Characterized by fallacy; false or mistaken.
Merriam-Webster
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Adjectives for fallacy - Merriam-Webster
Adjectives for fallacy: theory, verity, the
Merriam-Webster
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FALLACY Definition & Meaning - Merriam-Webster
3 days ago - a false or mistaken idea; erroneous character : erroneousness; deceptive appearance : deception… See the full definition
Merriam-Webster
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FALLACIOUS Synonyms: 187 Similar and Opposite Words | Merriam-Webster Thesaurus
January 25, 2026 - Synonyms for FALLACIOUS: unreasonable, irrational, unreasoning, illegitimate, misleading, unreasoned, illogical, absurd; Antonyms of FALLACIOUS: reasonable, logical, valid, rational, sound, wise, sensible, justified
Longman
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fallacious | meaning of fallacious in Longman Dictionary of Contemporary English | LDOCE
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.
BetterExplained
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Avoiding The Adjective Fallacy – BetterExplained
The Adjective Fallacy is trying to learn by mastering the formal rules.
Vocabulary.com
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Fallacy - Definition, Meaning & Synonyms | Vocabulary.com
Fallacy comes from the Latin fallacia, for deceit. It technically means a flaw in an argument that makes it deceptive or misleading. In poetry, the "pathetic fallacy" is the false idea that things like rocks or stars have human feelings (pathos).
Lexicon Learning
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FALLACIOUS | Definition and Meaning
(adjective) an illogical or delusional quality; delusive; e.g. They received fallacious hopes and well-wishes by people who actually disliked them a lot. Select a language from the dropdown and click "Translate Now" to see this word in your preferred language.
Oxford Learner's Dictionaries
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fallacy noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com
fallacious · adjective · fallacy · noun · fall apart · phrasal verb · fall away · phrasal verb · infer · verb · From the Word list · OPAL written words ·
Encyclopedia Britannica
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Fallacious Definition & Meaning | Britannica Dictionary
fallacious (adjective) fallacious /fəˈleɪʃəs/ adjective · fallacious · /fəˈleɪʃəs/ adjective · Britannica Dictionary definition of FALLACIOUS · [more fallacious; most fallacious] formal · : containing a mistake : not true or accurate ...
Spellzone
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fallacious - containing or based on a fallacy | English Spelling Dictionary
fallacious - adjective · containing or based on a fallacy · intended to deceive · based on an incorrect or misleading notion or information · fallacious - thesaurus · deceitful fraudulent unsound · Scrabble score = 15 · Please note that scrabble only allows seven tiles to be placed at once.