éclusevsécusWhich spelling fits?

Which to use

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

#29,608
“écluse” frequency rank
#33,086
“écus” frequency rank
62694
confusion score

Side-by-Side Comparison

Feature écluse écus
Definition Clôture en forme de bassin, faite de terre, de pierre, de bois ou de toute autre matière dans un port, sur une rivière, sur un canal, etc., ayant une ou plusieurs portes qui se lèvent et se baissent ou qui s’ouvrent et se ferment, pour retenir et pour laisser passer l’eau. Pluriel de écu.

Where the eye mixes écluse and écus

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. écluse runs 6 letters (VCCVCV) against écus's 4 (VCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
écluse
4 ch
écus

Look-alike desk: écluse vs écus

A purely visual mix-up. écluse (\e.klyz\) and écus (\e.ky\) 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 2 letter(s) in length. Our composite confusion score for this pair is 62694, derived from the frequency rank of both members and their visual similarity.

écluse is recorded at frequency rank #29,608, classified as anoun, pronounced \e.klyz\. écus is at rank #33,086, tagged as anoun, pronounced \e.ky\.

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 62694, this pair ranks #85,816 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of écluse vs écus

Shared letters: csué. Private to "écluse": el. Private to "écus": -.

"écluse" · 6 letters · shape VCCVCV  ·  "écus" · 4 letters · shape VCVC

Frequently Asked Questions

Do "écluse" and "écus" mean the same thing in a sentence?
No. They are said differently (\e.klyz\ versus \e.ky\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "écluse" or "écus" show up more?
"écluse" is the more common of the two: it sits at frequency rank #29,608 in our French list, against #33,086 for "écus". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "écluse" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "écus" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #85,816 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "écluse" and "écus" also get mixed up with nearby pairs, the highest-scored neighbour is "écus vs étuis". Nearby pair

Confusion rank #85,816 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