Phrase guide

logical fallacy

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

A fallacy; a clearly defined error in reasoning used to support or refute an argument, excluding simple unintended mistakes.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: fallacy, incorrect argument, misargument, non-argument, pseudoargument

Antonyms: none provided

Narrower terms: formal fallacy, informal fallacy

2

noun

Meaning 2

A formal fallacy.

Definition source: English Wiktionary via Wiktextract

Examples

  • A valid syllogism contains three terms; with four it commits the logical fallacy known as quaternio terminorum.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

a fallacy in logical argumentation

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: fallacy, false belief

Narrower terms: hysteron proteron, ignoratio elenchi, petitio principii, petitio, post hoc, post hoc ergo propter hoc

History

Etymology

No etymology was provided for this word.

Across languages

Translations

7 source translations are retained for this English entry.

  • Chinese Mandarin: 邏輯謬誤 /逻辑谬误 (luójí miùwù) — clearly defined error in reasoning
  • Czech: logický klam — clearly defined error in reasoning
  • Italian: errore logico — clearly defined error in reasoning
  • Italian: falso ragionamento — clearly defined error in reasoning
  • Italian: sofisma — clearly defined error in reasoning
  • Macedonian: логичка грешка (logička greška) — clearly defined error in reasoning
  • Tagalog: kamalian — clearly defined error in reasoning