filonsvsfonsTell them apart

Quick tell: filons is a verb, fons is a noun, so they fill different roles in a sentence.

Which to use

“filons” is a verb and “fons” is a noun - they look or sound alike but fill different roles in a sentence.

#27,812
“filons” frequency rank
#43,445
“fons” frequency rank
71257
confusion score

Side-by-Side Comparison

Feature filons fons
Definition Première personne du pluriel de l’indicatif présent du verbe filer. Fonds (patrimoine).

Letter map: filons vs fons

Shared letters muted; letters that set filons and fons apart highlighted. Shared run: 4. filons runs 6 letters (CVCVCC) against fons's 4 (CVCC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
filons
4 ch
fons

Part-of-speech tell for filons / fons

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: filons is averb and fonsanoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 71257, derived from the frequency rank of both members and their visual similarity.

filons is recorded at frequency rank #27,812, classified as averb, pronounced \fi.lɔ̃\. fons is at rank #43,445, tagged as anoun.

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 71257, this pair ranks #48,241 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of filons vs fons

Shared letters: fnos. Private to "filons": il. Private to "fons": -.

"filons" · 6 letters · shape CVCVCC  ·  "fons" · 4 letters · shape CVCC

Known mistypes of this pair

  • filons ← ffilons · fillons · filnos · filonns · filonss · filosn · fiolns · flions
  • fons ← ffons · fnos · fonns · fonss · fosn · ofns

Frequently Asked Questions

Can "filons" and "fons" be used interchangeably?
No - they are not even the same part of speech. "filons" is a verb and "fons" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "filons" or "fons"?
"filons" is the more common of the two: it sits at frequency rank #27,812 in our French list, against #43,445 for "fons". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "filons" vs "fons" is on the table, pick a follow-up below.

  • Full dictionary entry for "filons" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fons" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #48,241 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "filons" and "fons" also get mixed up with nearby pairs, the highest-scored neighbour is "foins vs fons". 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 #48,241 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