décélérationvsdeclarationWhat's the difference?

Which to use

“décélération” and “declaration” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#49,042
“décélération” frequency rank
#38,742
“declaration” frequency rank
87784
confusion score

Side-by-Side Comparison

Feature décélération declaration
Definition Diminution de la vitesse (accélération négative). Déclaration.

Where the eye mixes décélération and declaration

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence.

12 ch
décélération
11 ch
declaration

Why the eye confuses décélération with declaration

A purely visual mix-up. décélération (\de.se.le.ʁa.sjɔ̃\) and declaration (\ˌdekləˈreɪʃn\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 87784, derived from the frequency rank of both members and their visual similarity.

décélération is recorded at frequency rank #49,042, classified as anoun, pronounced \de.se.le.ʁa.sjɔ̃\. declaration is at rank #38,742, tagged as anoun, pronounced \ˌdekləˈreɪʃn\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 87784, this pair ranks #7,813 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of décélération vs declaration

Shared letters: acdilnort. Private to "décélération": é. Private to "declaration": e.

"décélération" · 12 letters · shape CVCVCVCVCVVC  ·  "declaration" · 11 letters · shape CVCCVCVCVVC

Known mistypes of this pair

  • declarationdcelaration · ddeclaration · decalration · decclaration · declaartion · declaraiton · declaratino · declarationn

Frequently Asked Questions

Do "décélération" and "declaration" mean the same thing in a sentence?
No. They are said differently (\de.se.le.ʁa.sjɔ̃\ versus \ˌdekləˈreɪʃn\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "décélération" or "declaration" show up more?
"declaration" is the more common of the two: it sits at frequency rank #38,742 in our French list, against #49,042 for "décélération". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "décélération" and "declaration" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "décélération" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "declaration" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #7,813 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "décélération" and "declaration" also get mixed up with nearby pairs, the highest-scored neighbour is "décélération vs décoloration". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #7,813 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list