Which to use
“opus” and “os” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #8,746
- “opus” frequency rank
- #2,632
- “os” frequency rank
- 11378
- confusion score
Side-by-Side Comparison
| Feature | opus | os |
|---|---|---|
| Definition | Indication utilisée pour désigner un morceau de musique répertorié par un numéro dans l’œuvre complète d’un compositeur. | Élément du squelette des animaux vertébrés, fait de ce tissu dur et calcifié. |
Where the eye mixes opus and os
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between opus and os
A purely visual mix-up. opus (\ɔ.pys\) and os (\ɔs\) 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 11378, derived from the frequency rank of both members and their visual similarity.
opus is recorded at frequency rank #8,746, classified as anoun, pronounced \ɔ.pys\. os is at rank #2,632, tagged as anoun, pronounced \ɔs\.
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 11378, this pair ranks #409,376 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of opus vs os
Shared letters: os. Private to "opus": pu. Private to "os": -.
"opus" · 4 letters · shape VCVC · "os" · 2 letters · shape VC
Known mistypes of this pair
- opus ← oppus · opsu · opuss · pous
Frequently Asked Questions
Can "opus" and "os" be used interchangeably?
Frequency check: "opus" vs "os" - which ranks higher?
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 "opus" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "os" - compare definitions side by side with the headword page. Word entry
- This pair ranks #409,376 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "opus" and "os" also get mixed up with nearby pairs, the highest-scored neighbour is "opus vs oust". 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 #409,376 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.