fibrevsfiresWhich spelling fits?

Which to use

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

#11,694
“fibre” frequency rank
#5,417
“fires” frequency rank
17111
confusion score

Side-by-Side Comparison

Feature fibre fires
Definition A single piece of a given material, elongated and roughly round in cross-section, often twisted with other fibres to form thread. plural of fire

Where the eye mixes fibre and fires

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch
fibre
5 ch
fires

Look-alike desk: fibre vs fires

A purely visual mix-up. fibre (/ˈfaɪ.bə(ɹ)/) and fires (/ˈfaɪ̯ə(ɹ)z/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 3 positions. Our composite confusion score for this pair is 17111, derived from the frequency rank of both members and their visual similarity.

fibre is recorded at frequency rank #11,694, classified as anoun, pronounced /ˈfaɪ.bə(ɹ)/. fires is at rank #5,417, tagged as anoun, pronounced /ˈfaɪ̯ə(ɹ)z/.

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 17111, this pair ranks #453,566 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of fibre vs fires

Shared letters: efir. Private to "fibre": b. Private to "fires": s.

"fibre" · 5 letters · shape CVCCV  ·  "fires" · 5 letters · shape CVCVC

Known mistypes of this pair

  • fibrefbire · ffibre · fibbre · fibrre · firbe · ifbre
  • firesffires · fiers · firess · firres · firse · ifres

Frequently Asked Questions

Is swapping "fibre" for "fires" ever safe?
No. They are said differently (/ˈfaɪ.bə(ɹ)/ versus /ˈfaɪ̯ə(ɹ)z/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "fibre" or "fires"?
"fires" is the more common of the two: it sits at frequency rank #5,417 in our English list, against #11,694 for "fibre". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "fibre" and "fires" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "fibre" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fires" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #453,566 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "fibre" and "fires" also get mixed up with nearby pairs, the highest-scored neighbour is "fibre vs fie". 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 #453,566 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list