Which to use
“deir” is an adjective and “devoir” is a verb - they look or sound alike but fill different roles in a sentence.
- #38,242
- “deir” frequency rank
- #843
- “devoir” frequency rank
- 39085
- confusion score
Side-by-Side Comparison
| Feature | deir | devoir |
|---|---|---|
| Definition | Forme mutée de teir par adoucissement (t → d). | Avoir à payer une somme d’argent, à rendre ou à donner quelque chose que ce soit. |
Where the eye mixes deir and devoir
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses deir with devoir
These two trip readers on the page rather than in the ear: deir is \dɛjr\ while devoir is \də.vwaʁ\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 39085, 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\. devoir is at rank #843, tagged as averb, pronounced \də.vwaʁ\.
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 39085, this pair ranks #250,617 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of deir vs devoir
Shared letters: deir. Private to "deir": -. Private to "devoir": ov.
"deir" · 4 letters · shape CVVC · "devoir" · 6 letters · shape CVCVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "deir" for "devoir" ever safe?
In ordinary French text, does "deir" or "devoir" show up more?
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 "deir" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "devoir" - compare definitions side by side with the headword page. Word entry
- This pair ranks #250,617 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "deir" and "devoir" also get mixed up with nearby pairs, the highest-scored neighbour is "deir vs denim". 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 #250,617 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.