Which to use
“commencer” and “commercer” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #976
- “commencer” frequency rank
- #38,210
- “commercer” frequency rank
- 39186
- confusion score
Side-by-Side Comparison
| Feature | commencer | commercer |
|---|---|---|
| Definition | Engager une action, entreprendre une tâche, donner à une chose un commencement d’existence. | Faire du commerce. |
Where the eye mixes commencer and commercer
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence. commencer and commercer follow the identical consonant-vowel pattern (CVCCVCCVC). Same shape at a glance is often the real trap, independent of shared letters.
Why the eye confuses commencer with commercer
A purely visual mix-up. commencer (\kɔ.mɑ̃.se\) and commercer (\kɔ.mɛʁ.se\) 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 a single letter - n in “commencer” becomes r in “commercer”. Our composite confusion score for this pair is 39186, derived from the frequency rank of both members and their visual similarity.
commencer is recorded at frequency rank #976, classified as averb, pronounced \kɔ.mɑ̃.se\. commercer is at rank #38,210, tagged as averb, pronounced \kɔ.mɛʁ.se\.
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 39186, this pair ranks #249,852 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of commencer vs commercer
Shared letters: cemor. Private to "commencer": n. Private to "commercer": -.
"commencer" · 9 letters · shape CVCCVCCVC · "commercer" · 9 letters · shape CVCCVCCVC
Known mistypes of this pair
Frequently Asked Questions
Can "commencer" and "commercer" be used interchangeably?
Which is more common, "commencer" or "commercer"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "commencer" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "commercer" - compare definitions side by side with the headword page. Word entry
- This pair ranks #249,852 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "commencer" and "commercer" also get mixed up with nearby pairs, the highest-scored neighbour is "commercer vs commère". 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 #249,852 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.