septvsserWhat's the difference?

Quick tell: sept is a adjective, ser is a pronoun, so they fill different roles in a sentence.

Which to use

“sept” is an adjective and “ser” is a pronoun - they look or sound alike but fill different roles in a sentence.

#831
“sept” frequency rank
#15,252
“ser” frequency rank
16083
confusion score

Side-by-Side Comparison

Feature sept ser
Definition Six plus un, adjectif numéral cardinal correspondant au nombre 7. Que.

Letter map: sept vs ser

Shared letters muted; letters that set sept and ser apart highlighted. Shared run: 2.

4 ch
sept
3 ch
ser

Part-of-speech tell for sept / ser

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sept is anadjective and serapronoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 16083, derived from the frequency rank of both members and their visual similarity.

sept is recorded at frequency rank #831, classified as anadj, pronounced \sɛt\. ser is at rank #15,252, tagged as apron.

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 16083, this pair ranks #389,471 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sept vs ser

Shared letters: es. Private to "sept": pt. Private to "ser": r.

"sept" · 4 letters · shape CVCC  ·  "ser" · 3 letters · shape CVC

Known mistypes of this pair

  • septespt · seppt · septt · setp · spet · ssept

Frequently Asked Questions

Do "sept" and "ser" mean the same thing in a sentence?
No - they are not even the same part of speech. "sept" is an adjective and "ser" a pronoun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sept" or "ser"?
"sept" is the more common of the two: it sits at frequency rank #831 in our French list, against #15,252 for "ser". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Done with this confusable. These links stay specific to "sept" and "ser".

  • Full dictionary entry for "sept" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ser" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #389,471 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "sept" and "ser" 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 #389,471 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list