frsvsfusTell them apart

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

Which to use

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

#40,776
“frs” frequency rank
#19,029
“fus” frequency rank
59805
confusion score

Side-by-Side Comparison

Feature frs fus
Definition Abréviation de francs. Première personne du singulier du passé simple de être.

Letter map: frs vs fus

Shared letters muted; letters that set frs and fus apart highlighted. Shared run: 2.

3 ch
frs
3 ch
fus

Part-of-speech tell for frs / fus

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: frs is anoun and fusaverb. On the page they differ by a single letter - r in “frs” becomes u in “fus”. Our composite confusion score for this pair is 59805, derived from the frequency rank of both members and their visual similarity.

frs is recorded at frequency rank #40,776, classified as anoun. fus is at rank #19,029, tagged as averb, pronounced \fy\.

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 59805, this pair ranks #101,094 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of frs vs fus

Shared letters: fs. Private to "frs": r. Private to "fus": u.

"frs" · 3 letters · shape CCC  ·  "fus" · 3 letters · shape CVC

Frequently Asked Questions

Can "frs" and "fus" be used interchangeably?
No - they are not even the same part of speech. "frs" is a noun and "fus" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "frs" or "fus" show up more?
"fus" is the more common of the two: it sits at frequency rank #19,029 in our French list, against #40,776 for "frs". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pair "frs" vs "fus" is on the table, pick a follow-up below.

  • Full dictionary entry for "frs" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fus" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #101,094 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "frs" and "fus" also get mixed up with nearby pairs, the highest-scored neighbour is "Fee vs frs". Nearby pair

Confusion rank #101,094 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