fonctionvsfonctionsWhat's the difference?

Which to use

“fonction” and “fonctions” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#724
“fonction” frequency rank
#1,566
“fonctions” frequency rank
2290
confusion score

Side-by-Side Comparison

Feature fonction fonctions
Definition Activité qui tend à un but déterminé. Pluriel de fonction.

Same sound, different letters: fonction vs fonctions

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 8 letters. fonction runs 8 letters (CVCCCVVC) against fonctions's 9 (CVCCCVVCC) - the length gap alone is often enough to separate them once you know to check it.

8 ch
fonction
9 ch
fonctions

Same sound, different spelling - fonction / fonctions

This is the hard kind. fonction and fonctions are pronounced identically (\fɔ̃k.sjɔ̃\) 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) - “fonction” sits inside “fonctions”. Our composite confusion score for this pair is 2290, derived from the frequency rank of both members and their visual similarity.

fonction is recorded at frequency rank #724, classified as anoun, pronounced \fɔ̃k.sjɔ̃\. fonctions is at rank #1,566, tagged as anoun, pronounced \fɔ̃k.sjɔ̃\.

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 2290, this pair ranks #436,418 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of fonction vs fonctions

Shared letters: cfinot. Private to "fonction": -. Private to "fonctions": s.

"fonction" · 8 letters · shape CVCCCVVC  ·  "fonctions" · 9 letters · shape CVCCCVVCC

Known mistypes of this pair

  • fonction ← ffonction · fnoction · focntion · foncction · fonciton · fonctino · fonctionn · fonctoin
  • fonctions ← ffonctions · fnoctions · focntions · foncctions · foncitons · fonctinos · fonctionns · fonctionss

Frequently Asked Questions

Can "fonction" and "fonctions" be used interchangeably?
No. They are pronounced the same (\fɔ̃k.sjɔ̃\), which is exactly why they get swapped in writing, but the dictionary meanings above are different, and pronunciation is no guide here.
Frequency check: "fonction" vs "fonctions" - which ranks higher?
"fonction" is the more common of the two: it sits at frequency rank #724 in our French list, against #1,566 for "fonctions". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

You've separated the homophone pair "fonction" / "fonctions". Follow the links when you need the full entry or a neighbour that trips the same ear.

  • Full dictionary entry for "fonction" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fonctions" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #436,418 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fonction" and "fonctions" also get mixed up with nearby pairs, the highest-scored neighbour is "fonctions vs function". 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 #436,418 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