Definition of Fallacious
Quick Meaning of Fallacious
Based on a mistake or false reasoning; logically wrong even if it seems convincing.
Detailed Definition of Fallacious
Based on a false or mistaken belief; logically invalid
How to Pronounce Fallacious
Stress pattern: oOo (3-syllable word).
Tip: fə-LAY-shəs. Stress second syllable (LAY). Three syllables: fal-LA-cious.
Watch out: Some learners say 'fal-AY-shus'. Correct: fə-LAY-shəs.
Origin and Etymology of Fallacious
From Latin 'fallaciosus' (deceptive), from 'fallacia' (deception), from 'fallere' (to deceive, fail).
How to Use Fallacious in a Sentence
Each example shows “fallacious” with a CEFR level so learners can pick examples that match their fluency.
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“The fallacious reasoning in the advertisement appealed to emotion rather than logic.”
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“Her fallacious conclusion ignored critical evidence that contradicted her thesis.”
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“The fallacious argument mistakenly assumed all teenagers are irresponsible.”
Synonyms and Antonyms of Fallacious
Common Synonyms for Fallacious
Smart Synonyms for Fallacious — When to Use Each
- false
- Not true without reasoned basis
- unsound
- Not logically valid emphasized flaw
- invalid
- Not legally binding or just
Antonyms of Fallacious
Common Collocations with Fallacious
These phrases pair with “fallacious” in everyday English:
- fallacious reasoning
- fallacious argument
- fallacious logic
- fallacious conclusion
Common Mistakes When Using Fallacious
Even fluent speakers slip up with “fallacious”. Here’s how to avoid the most common errors:
- ✗ Wrong: Incorrect use of fallacious.
- ✓ Correct: Correct use of fallacious.
- Why: See usage tip for correct usage context.
- ✗ Wrong: Another incorrect use of fallacious.
- ✓ Correct: Another correct use of fallacious.
- Why: See collocations for typical uses.
- ✗ Wrong: Third incorrect use of fallacious.
- ✓ Correct: Third correct use of fallacious.
- Why: Review the main meaning and usage tip.
Other Forms of Fallacious
- Adjective: fallacious
Frequently Asked Questions About Fallacious
What is the meaning of "Fallacious"?
Based on a mistake or false reasoning; logically wrong even if it seems convincing.
How do you pronounce "Fallacious"?
The IPA is /fəˈleɪʃəs/. fə-LAY-shəs. Stress second syllable (LAY). Three syllables: fal-LA-cious.
What part of speech is "Fallacious"?
"Fallacious" is an adjective at C2 level (Common European Framework).
What are synonyms for "Fallacious"?
Common synonyms include false, incorrect, unsound.
How do you use "Fallacious" in a sentence?
For example: "The fallacious reasoning in the advertisement appealed to emotion rather than logic."