fibrevsfibroseWhich spelling fits?

Which to use

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

#6,089
“fibre” frequency rank
#47,897
“fibrose” frequency rank
53986
confusion score

Side-by-Side Comparison

Feature fibre fibrose
Definition Élément anatomique long et frêle, pour animaux ou végétaux. Formation pathologique de tissu fibreux.

Where the eye mixes fibre and fibrose

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. fibre runs 5 letters (CVCCV) against fibrose's 7 (CVCCVCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
fibre
7 ch
fibrose

Visual trap between fibre and fibrose

A purely visual mix-up. fibre (\fibʁ\) and fibrose (\fi.bʁoz\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 letter(s) in length. Our composite confusion score for this pair is 53986, derived from the frequency rank of both members and their visual similarity.

fibre is recorded at frequency rank #6,089, classified as anoun, pronounced \fibʁ\. fibrose is at rank #47,897, tagged as anoun, pronounced \fi.bʁoz\.

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 53986, this pair ranks #137,069 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fibre vs fibrose

Shared letters: befir. Private to "fibre": -. Private to "fibrose": os.

"fibre" · 5 letters · shape CVCCV  ·  "fibrose" · 7 letters · shape CVCCVCV

Known mistypes of this pair

  • fibre ← fbire · ffibre · fibbre · fiber · fibrre · firbe · ifbre
  • fibrose ← fbirose · ffibrose · fibbrose · fiborse · fibroes · fibrosse · fibrrose · fibrsoe

Frequently Asked Questions

Is swapping "fibre" for "fibrose" ever safe?
No. They are said differently (\fibʁ\ versus \fi.bʁoz\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "fibre" vs "fibrose" - which ranks higher?
"fibre" is the more common of the two: it sits at frequency rank #6,089 in our French list, against #47,897 for "fibrose". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "fibre" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fibrose" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #137,069 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "fibre" and "fibrose" also get mixed up with nearby pairs, the highest-scored neighbour is "fibres vs fibrose". 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 #137,069 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