décélérateur

\de.se.le.ʁa.tœʁ\

/\de.se.le.ʁa.tœʁ\/ adj

The verdict

“décélérateur” is uncommon French (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency French
12
letters

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

Corpus desk

Index FR-decelerateur · décélérateur · French

décélérateur · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "D" 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 décélérateur
PropertyValue
Headworddécélérateur
LanguageFrench
Part of speechAdjective
IPA\de.se.le.ʁa.tœʁ\
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « décélérateur » en français

décélérateurreste hors des 100.000 mots français les plus fréquents, dans la longue queue du vocabulaire technique, archaïque ou rare, là où le doute d'orthographe frappe.

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

Rare enough to double-check

décélérateur is uncommon French outside the top frequency list, classed as anadjective, transcribed \de.se.le.ʁa.tœʁ\. Rarity is why readers land here mid-draft. 2 senses are on record.

décélérateur doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable French rules. 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.

Our source data has no etymology on file for this entry, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct French form is décélérateur, spelled D-É-C-É-L-É-R-A-T-E-U-R.

Definition

  1. 1
    Qui décélère.
  2. 2
    Qui favorise la décélération.

Recorded use

Wiktionary examples

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

  1. La force décélératrice du freinage.
  2. Une longe décelératrice.

Synonyms

Antonyms

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 "décélérateur"?
"décélérateur" is spelled D-É-C-É-L-É-R-A-T-E-U-R. The IPA pronunciation is \de.se.le.ʁa.tœʁ\.
What does "décélérateur" mean?
As an adjective, "décélérateur" means: Qui décélère.
How do you pronounce "décélérateur"?
The IPA (International Phonetic Alphabet) transcription for "décélérateur" is \de.se.le.ʁa.tœʁ\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "décélérateur" come from?
"décélérateur" 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.

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

Source: FrequencyWords open word-frequency list