dièsevsdieselsWhich spelling fits?

Which to use

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

#33,643
“dièse” frequency rank
#44,979
“diesels” frequency rank
78622
confusion score

Side-by-Side Comparison

Feature dièse diesels
Definition Symbole graphique, formé de deux doubles barres croisées, (♯) appartenant à la famille des altérations et dont la fonction est d’indiquer sur la partition, que la hauteur naturelle de la note associée à ce dièse, ou à la clef, sur la ligne où se place la note, doit être élevée d’un demi-ton chromatique. Pluriel de diesel.

Where the eye mixes dièse and diesels

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. dièse runs 5 letters (CVVCV) against diesels's 7 (CVVCVCC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
dièse
7 ch
diesels

Look-alike desk: dièse vs diesels

A purely visual mix-up. dièse (\djɛz\) and diesels (\dje.zɛl\) 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 78622, derived from the frequency rank of both members and their visual similarity.

dièse is recorded at frequency rank #33,643, classified as anoun, pronounced \djɛz\. diesels is at rank #44,979, tagged as anoun, pronounced \dje.zɛl\.

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 78622, this pair ranks #25,266 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of dièse vs diesels

Shared letters: deis. Private to "dièse": è. Private to "diesels": l.

"dièse" · 5 letters · shape CVVCV  ·  "diesels" · 7 letters · shape CVVCVCC

Known mistypes of this pair

  • diesels ← ddiesels · deisels · dieesls · diesells · dieselss · diesesl · diesles · diessels

Frequently Asked Questions

Is swapping "dièse" for "diesels" ever safe?
No. They are said differently (\djɛz\ versus \dje.zɛl\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "dièse" or "diesels"?
"dièse" is the more common of the two: it sits at frequency rank #33,643 in our French list, against #44,979 for "diesels". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "dièse" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "diesels" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #25,266 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "dièse" and "diesels" also get mixed up with nearby pairs, the highest-scored neighbour is "dièse vs diez". 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 #25,266 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