Standard Lemma guide

fallacious

adj · 5 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /fəˈleɪ.ʃəs/
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -eɪʃəs
  • CMU ARPABET: F AH0 L EY1 SH AH0 S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Characterized by fallacy; false or mistaken.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: erroneous, incorrect, wrong

Antonyms: accurate, correct, true

2

adj

Meaning 2

Deceptive or misleading.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: deceitful, deceiving, mendacious, misdirective

Antonyms: none provided

3

adjective satellite

Meaning 3

based on an incorrect or misleading notion or information

Definition source: Princeton WordNet 3.0

Examples

  • fallacious hope

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adjective satellite

Meaning 4

intended to deceive - S.T.Coleridge

Definition source: Princeton WordNet 3.0

Examples

  • deceitful advertising
  • fallacious testimony
  • smooth, shining, and deceitful as thin ice
  • a fraudulent scheme to escape paying taxes

Meaning relationships

Synonyms: deceitful, fraudulent

Antonyms: none provided

5

adjective satellite

Meaning 5

containing or based on a fallacy

Definition source: Princeton WordNet 3.0

Examples

  • fallacious reasoning
  • an unsound argument

Meaning relationships

Synonyms: unsound

Antonyms: none provided

History

Etymology

From Old French fallacieux (whence -acious), from Latin fallācia, from fallāx, from fallere.

Across languages

Translations

37 source translations are retained for this English entry.

  • Bulgarian: погрешен (pogrešen) — characterized by fallacy; false or mistaken
  • Bulgarian: измамен (izmamen) — characterized by fallacy; false or mistaken
  • Chinese Mandarin: 謬誤的 /谬误的 — characterized by fallacy; false or mistaken
  • Dutch: bedrieglijk — characterized by fallacy; false or mistaken
  • Finnish: virheellinen — characterized by fallacy; false or mistaken
  • Finnish: paikkansapitämätön — characterized by fallacy; false or mistaken
  • Finnish: erheellinen — characterized by fallacy; false or mistaken
  • French: fallacieux — characterized by fallacy; false or mistaken
  • Irish: fallásach — characterized by fallacy; false or mistaken
  • Kyrgyz: жаңылыштык (jaŋılıştık) — characterized by fallacy; false or mistaken
  • Kyrgyz: ката (kata) — characterized by fallacy; false or mistaken
  • Latin: falsus — characterized by fallacy; false or mistaken
  • Māori: hāwatewate — characterized by fallacy; false or mistaken
  • Māori: tipatipa — characterized by fallacy; false or mistaken
  • Polish: mylny — characterized by fallacy; false or mistaken
  • Polish: chybiony — characterized by fallacy; false or mistaken
  • Portuguese: falacioso — characterized by fallacy; false or mistaken
  • Russian: оши́бочный (ošíbočnyj) — characterized by fallacy; false or mistaken
  • Sicilian: fausu — characterized by fallacy; false or mistaken
  • Sicilian: sbagghiatu — characterized by fallacy; false or mistaken
  • Spanish: falaz — characterized by fallacy; false or mistaken
  • Swedish: felaktig — characterized by fallacy; false or mistaken
  • Turkish: yanlış — characterized by fallacy; false or mistaken
  • Turkish: yanılgılı — characterized by fallacy; false or mistaken
  • Bulgarian: неверен (neveren) — deceptive or misleading
  • Bulgarian: лъжлив (lǎžliv) — deceptive or misleading
  • Finnish: harhaanjohtava — deceptive or misleading
  • Finnish: pettävä — deceptive or misleading
  • Finnish: erehdyttävä — deceptive or misleading
  • German: irreführend — deceptive or misleading
  • German: trügerisch — deceptive or misleading
  • Latin: fallāx — deceptive or misleading
  • Portuguese: erróneo — deceptive or misleading
  • Russian: ло́жный (lóžnyj) — deceptive or misleading
  • Russian: обма́нчивый (obmánčivyj) — deceptive or misleading
  • Turkish: aldatıcı — deceptive or misleading
  • Turkish: yanıltıcı — deceptive or misleading