Which to use
“ser” is a pronoun and “sieur” is a noun - they look or sound alike but fill different roles in a sentence.
- #15,252
- “ser” frequency rank
- #15,760
- “sieur” frequency rank
- 31012
- confusion score
Side-by-Side Comparison
| Feature | ser | sieur |
|---|---|---|
| Definition | Que. | Monsieur. |
Letter map: ser vs sieur
Shared letters muted; letters that set ser and sieur apart highlighted. Shared run: 3.
Role in the sentence - ser and sieur
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ser is apronoun and sieuranoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 31012, derived from the frequency rank of both members and their visual similarity.
ser is recorded at frequency rank #15,252, classified as apron. sieur is at rank #15,760, tagged as anoun, pronounced \sjœʁ\.
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 31012, this pair ranks #306,567 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ser vs sieur
Shared letters: ers. Private to "ser": -. Private to "sieur": iu.
"ser" · 3 letters · shape CVC · "sieur" · 5 letters · shape CVVVC
Known mistypes of this pair
- sieur ← iseur · seiur · sieru · sieurr · siuer · ssieur
Frequently Asked Questions
Is swapping "ser" for "sieur" ever safe?
Frequency check: "ser" vs "sieur" - which ranks higher?
What to do next
Done with this confusable. These links stay specific to "ser" and "sieur".
- Full dictionary entry for "ser" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sieur" - compare definitions side by side with the headword page. Word entry
- This pair ranks #306,567 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "ser" and "sieur" also get mixed up with nearby pairs, the highest-scored neighbour is "ser vs suu". 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 #306,567 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.