M. Je-Sais-Tout

\mə.sjø ʒə.sɛ.tu\

/\mə.sjø ʒə.sɛ.tu\/ noun

The verdict

“M. Je-Sais-Tout” is uncommon French (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency French
15
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Personne extrêmement savante ou qui prétend tout savoir.

Corpus desk

Index FR-m-je-sais-tout · M. Je-Sais-Tout · French

M. Je-Sais-Tout · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 15 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "M" thin
  • PHOTO-UNK Peer pending

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for M. Je-Sais-Tout
PropertyValue
HeadwordM. Je-Sais-Tout
LanguageFrench
Part of speechNoun
IPA\mə.sjø ʒə.sɛ.tu\
Letters15
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « M. Je-Sais-Tout » en français

M. Je-Sais-Toutn'entre pas dans le top 100.000 du français: zone de termes techniques, archaïques ou rares.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

M. Je-Sais-Tout is uncommon French outside the top frequency list, classed as anoun, transcribed \mə.sjø ʒə.sɛ.tu\. Rarity is why readers land here mid-draft. 2 senses are on record.

The misspelling generator found no plausible variants for M. Je-Sais-Tout, and the word's spelling is regular enough that our generator found nothing worth flagging. Our dataset records no confusable match here, which tends to mean the word is visually distinctive enough to stand on its own.

This entry carries no recorded etymology, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct French form is M. Je-Sais-Tout, spelled M-.- -J-E---S-A-I-S---T-O-U-T.

Definition

  1. 1
    Personne extrêmement savante ou qui prétend tout savoir.
  2. 2
    Personne qui fait semblant de tout savoir.

Recorded use

Wiktionary examples

These source excerpts show how M. Je-Sais-Tout appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Croyant avoir livré l'essentiel des renseignements parvenus à ma connaissance, je récapitule, ne serait-ce que pour permettre à M. Je-sais-tout, le fameux colonel Goutard, de se rendre compte qu'il s'est lourdement trompé sur de nombreux points quand il a écrit « La Guerre des occasions perdues ».
  2. Il me regarde une deuxième fois tandis que je m'assois devant le comptoir, et son sourire énervant de M. Je-sais-tout se dessine sur ses lèvres.

Synonyms

ti-Jo Connaissantti-Joe Connaissant

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "M. Je-Sais-Tout"?
"M. Je-Sais-Tout" is spelled M-.- -J-E---S-A-I-S---T-O-U-T. The IPA pronunciation is \mə.sjø ʒə.sɛ.tu\.
What does "M. Je-Sais-Tout" mean?
As a noun, "M. Je-Sais-Tout" means: Personne extrêmement savante ou qui prétend tout savoir.
How do you pronounce "M. Je-Sais-Tout"?
The IPA (International Phonetic Alphabet) transcription for "M. Je-Sais-Tout" is \mə.sjø ʒə.sɛ.tu\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "M. Je-Sais-Tout" come from?
"M. Je-Sais-Tout" is a French word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
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.

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

Source: FrequencyWords open word-frequency list