Which to use
“once” and “onces” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #11,815
- “once” frequency rank
- #42,500
- “onces” frequency rank
- 54315
- confusion score
Side-by-Side Comparison
| Feature | once | onces |
|---|---|---|
| Definition | Unité de mesure de la masse (système impérial britannique avoirdupois), qui vaut 28,3495231 grammes pour l'once commune → voir ounce. Ses symboles sont oz et ℥. L'once troy (troy ounce) équivaut pour sa part à 31,1034768 grammes. | Pluriel de once. |
Same sound, different letters: once vs onces
Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 4 letters.
Homophone desk: once vs onces
This is the hard kind. once and onces are pronounced identically (\ɔ̃s\) and both work as anoun. Neither the ear nor the grammar will rescue you; only the meaning does, so the glosses below are the whole decision. They differ by 1 extra letter(s) - “once” sits inside “onces”. Our composite confusion score for this pair is 54315, derived from the frequency rank of both members and their visual similarity.
once is recorded at frequency rank #11,815, classified as anoun, pronounced \ɔ̃s\. onces is at rank #42,500, tagged as anoun, pronounced \ɔ̃s\.
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 54315, this pair ranks #134,855 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of once vs onces
Shared letters: ceno. Private to "once": -. Private to "onces": s.
"once" · 4 letters · shape VCCV · "onces" · 5 letters · shape VCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "once" for "onces" ever safe?
Frequency check: "once" vs "onces" - which ranks higher?
What to do next
You've separated the homophone pair "once" / "onces". Follow the links when you need the full entry or a neighbour that trips the same ear.
- Full dictionary entry for "once" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "onces" - compare definitions side by side with the headword page. Word entry
- This pair ranks #134,855 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "once" and "onces" also get mixed up with nearby pairs, the highest-scored neighbour is "onces vs OSCE". 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 #134,855 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.