fallacieux

\fa.la.sjø\

/\fa.la.sjø\/ adj

The verdict

“fallacieux” is a moderately-common French word, ranked #38,289 in French word frequency and used as an adjective.

#38,289
frequency rank, French
10
letters
12
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Qui est fondé sur un mensonge ou un faux.

Key facts for fallacieux
PropertyValue
Headwordfallacieux
LanguageFrench
Part of speechAdjective
IPA\fa.la.sjø\
Letters10
Frequency rank#38,289
Misspellings tracked12
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “fallacieux” sits in French frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). fallacieux lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The French entry for fallacieux is 10 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as \fa.la.sjø\. Corpus data places it at rank #38,289 in overall French word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 12 likely wrong-spelling variants for fallacieux, with forms such as "afllacieux", "falacieux", and "falalcieux". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. No close-neighbour confusable shows up for this headword in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

This headword's origin isn't recorded in our source data, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct French form is fallacieux, spelled F-A-L-L-A-C-I-E-U-X.

Definition

  1. 1
    Qui est fondé sur un mensonge ou un faux.
  2. 2
    Qui vise à tromper.
  3. 3
    Illusoire, sans fondement.

Synonyms

This word in other languages

Common misspellings

Also misspelled as: afllacieux,falacieux,falalcieux,fallaccieux,fallaceiux,fallacieuxx,fallaciexu,fallaciuex,fallaiceux,fallcaieux,ffallacieux,flalacieux

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of fallacieux - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

afllacieux2falacieux1falalcieux2fallaccieux1fallaceiux2fallacieuxx1fallaciexu2fallaciuex2
Edit distance from "fallacieux"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 French corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "fallacieux"?
"fallacieux" is spelled F-A-L-L-A-C-I-E-U-X. The IPA pronunciation is \fa.la.sjø\.
What does "fallacieux" mean?
As an adjective, "fallacieux" means: Qui est fondé sur un mensonge ou un faux.
What are common misspellings of "fallacieux"?
Common misspellings include "afllacieux", "falacieux", "falalcieux", "fallaccieux", "fallaceiux". The correct spelling is "fallacieux".
How do you pronounce "fallacieux"?
The IPA (International Phonetic Alphabet) transcription for "fallacieux" is \fa.la.sjø\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "fallacieux" come from?
"fallacieux" is a French word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “fallacieux”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct French spelling is F-A-L-L-A-C-I-E-U-X - every other letter order is a misspelling in standard orthography.
  • Say it as \fa.la.sjø\ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more French words and confusable pairs in the same reference. French words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list