deir vs désir, What's the Difference?

Which to use

“deir” is an adjective and “désir” is a noun - they look or sound alike but fill different roles in a sentence.

#38,242
“deir” frequency rank: #2,670
“désir” frequency rank: 40912
confusion score

Side-by-Side Comparison

Feature	deir	désir
Definition	Forme mutée de teir par adoucissement (t → d).	Action de désirer ; résultat de cette action.

Where the spellings diverge

Shared letters are muted; the letters that actually set deir and désir apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.

4 ch

deir

5 ch

désir

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: deir is \dɛjr\ while désir is \de.ziʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 40912, derived from the frequency rank of both members and their visual similarity.

deir is recorded at frequency rank #38,242, classified as anadj, pronounced \dɛjr\. désir is at rank #2,670, tagged as anoun, pronounced \de.ziʁ\.

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 40912, this pair ranks #236,974 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of deir vs désir

Shared letters: dir. Private to "deir": e. Private to "désir": sé.

"deir" · 4 letters · shape CVVC · "désir" · 5 letters · shape CVCVC

Known mistypes of this pair

deir ← ddeir · deirr · deri · edir

Frequency comparison

deir#38,242

désir#2,670

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "deir" and "désir" be used interchangeably?

No - they are not even the same part of speech. "deir" is an adjective and "désir" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "deir" or "désir"?

"désir" is the more common of the two: it sits at frequency rank #2,670 in our French list, against #38,242 for "deir". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering deir vs désir

The fastest way to pick the right one every time.

Check the role first: if you need an adjective, it's “deir”; for a noun, it's “désir”.
See each word in full, definition, IPA, etymology and its other confusables. Full “deir” entry
Browse more pairs most likely to be confused. Most confusable