ralentisseur

\ʁa.lɑ̃.ti.sœʁ\

/\ʁa.lɑ̃.ti.sœʁ\/ adj

The verdict

“ralentisseur” is uncommon French (frequency #88,010 among 5,742 “R” headwords), classed as an adjective. The kind of spelling people second-guess.

#88,010
frequency rank, French
5,742
“R” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Qui ralentit.

Corpus desk

Index FR-ralentisseur · ralentisseur · French

ralentisseur · rank #88,010 · 0 variants · 0 confusables

  • FREQ-RARE #88,010
  • LEN-MEGA 12 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,742
  • PHOTO-FINISH Raimi

Nearest frequency peer: Raimi (-1 rank slots)

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.

Rangs de longue queue près de « ralentisseur »

Bande clairsemée: les barres inversent le rang pour que le rare se lise plus court

corpus weight

What this shows Vue de longue queue: où « ralentisseur » se situe face à des rangs français aussi rares.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for ralentisseur
PropertyValue
Headwordralentisseur
LanguageFrench
Part of speechAdjective
IPA\ʁa.lɑ̃.ti.sœʁ\
Letters12
Frequency rank#88,010
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « ralentisseur » en français

Cette échelle va du noyau du français courant (gauche) jusqu'à la traîne des formes rares (droite).ralentisseurtombe dans cette queue de rareté:

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

L'échelle est logarithmique (chaque tic ≈ 10× plus rare). Voisins rares de la même bande: « Raimi » (#88,009), « ramifiés » (#88,011), « raconteront » (#88,008). Parmi 5,742 lemmes en « R », « ralentisseur » est au #88,010. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

ralentisseur is uncommon French at frequency #88,010 among 5,742 “R” headwords, classed as anadjective, transcribed \ʁa.lɑ̃.ti.sœʁ\. Rarity is why readers land here mid-draft. Gloss: "Qui ralentit.".

ralentisseur has no tracked misspelling variants, since its letter sequence doesn't invite the usual edit-distance slips. We don't track a confusable pairing for this entry, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Wiktionary doesn't record an etymology for this headword, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct French form is ralentisseur, spelled R-A-L-E-N-T-I-S-S-E-U-R.

Definition

  1. 1
    Qui ralentit.

Recorded use

Wiktionary examples

These source excerpts show how ralentisseur appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. De plus, à l'intérieur de la zone, des dispositifs ralentisseurs sont mis en place là où la vitesse pourrait être excessive. Destinée à réduire les vitesses pour réduire l'impact des accidents, la zone 30 apporte surtout plus de sécurité aux usagers les plus vulnérables […].
  2. Alors, apercevant sur la route une de ces bosses ralentisseuses, il lui disait « Tu veux que papa fasse un badaboum ? » Oh oui ! qu'il voulait, le petit bonhomme, le papa accélérait à fond et les voilà tous deux en train de faire un grand bond dans la voiture […].

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 "ralentisseur"?
"ralentisseur" is spelled R-A-L-E-N-T-I-S-S-E-U-R. The IPA pronunciation is \ʁa.lɑ̃.ti.sœʁ\.
What does "ralentisseur" mean?
As an adjective, "ralentisseur" means: Qui ralentit.
How do you pronounce "ralentisseur"?
The IPA (International Phonetic Alphabet) transcription for "ralentisseur" is \ʁa.lɑ̃.ti.sœʁ\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "ralentisseur" come from?
"ralentisseur" 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.

Similar French words by spelling shape

Same letter count and similar misspelling depth for "ralentisseur", not the corpus desk frequency band.

Same letter count

Frequency-ranked French headwords with 12 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list