DaeshvsdièseWhich spelling fits?

Quick tell: Daesh is a name, dièse is a noun, so they fill different roles in a sentence.

Which to use

“Daesh” is a name and “dièse” is a noun - they look or sound alike but fill different roles in a sentence.

#11,384
“Daesh” frequency rank
#33,643
“dièse” frequency rank
45027
confusion score

Side-by-Side Comparison

Feature Daesh dièse
Definition Variante orthographique de Daech. 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.

Where the eye mixes Daesh and dièse

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

5 ch
Daesh
5 ch
dièse

Visual trap between Daesh and dièse

These two trip readers on the page rather than in the ear: Daesh is \da.ɛʃ\ while dièse is \djɛz\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 3 positions, and the parts of speech differ too (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 45027, derived from the frequency rank of both members and their visual similarity.

Daesh is recorded at frequency rank #11,384, classified as aname, pronounced \da.ɛʃ\. dièse is at rank #33,643, tagged as anoun, pronounced \djɛz\.

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 45027, this pair ranks #205,949 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Daesh vs dièse

Shared letters: des. Private to "Daesh": ah. Private to "dièse": .

"Daesh" · 5 letters · shape CVVCC  ·  "dièse" · 5 letters · shape CVVCV

Known mistypes of this pair

  • Daeshadesh · daehs · daeshh · daessh · daseh · ddaesh · deash

Frequently Asked Questions

Is swapping "Daesh" for "dièse" ever safe?
No - they are not even the same part of speech. "Daesh" is a name and "dièse" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "Daesh" or "dièse" show up more?
"Daesh" is the more common of the two: it sits at frequency rank #11,384 in our French list, against #33,643 for "dièse". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "Daesh" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "dièse" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #205,949 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "Daesh" and "dièse" 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 #205,949 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