frontièrevsfrontièresTell them apart

Which to use

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

#2,079
“frontière” frequency rank
#2,777
“frontières” frequency rank
4856
confusion score

Side-by-Side Comparison

Feature frontière frontières
Definition Les limites d’un état ou d’une contrée en tant qu’elles le séparent d’un autre état, d’une autre contrée. Pluriel de frontière.

Same sound, different letters: frontière vs frontières

Muted letters are shared; highlighted letters are the only spelling cue when pronunciation matches. Shared run: 9 letters. frontière runs 9 letters (CCVCCVVCV) against frontières's 10 (CCVCCVVCVC) - the length gap alone is often enough to separate them once you know to check it.

9 ch
frontière
10 ch
frontières

Same sound, different spelling - frontière / frontières

This is the hard kind. frontière and frontières are pronounced identically (\fʁɔ̃.tjɛʁ\) 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) - “frontière” sits inside “frontières”. Our composite confusion score for this pair is 4856, derived from the frequency rank of both members and their visual similarity.

frontière is recorded at frequency rank #2,079, classified as anoun, pronounced \fʁɔ̃.tjɛʁ\. frontières is at rank #2,777, tagged as anoun, pronounced \fʁɔ̃.tjɛʁ\.

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 4856, this pair ranks #430,512 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of frontière vs frontières

Shared letters: efinortè. Private to "frontière": -. Private to "frontières": s.

"frontière" · 9 letters · shape CCVCCVVCV  ·  "frontières" · 10 letters · shape CCVCCVVCVC

Frequently Asked Questions

Can "frontière" and "frontières" be used interchangeably?
No. They are pronounced the same (\fʁɔ̃.tjɛʁ\), which is exactly why they get swapped in writing, but the dictionary meanings above are different, and pronunciation is no guide here.
Frequency check: "frontière" vs "frontières" - which ranks higher?
"frontière" is the more common of the two: it sits at frequency rank #2,079 in our French list, against #2,777 for "frontières". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Sound matches; spelling doesn't. Use the exits below to lock the right form or check a cousin pair.

  • Full dictionary entry for "frontière" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "frontières" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #430,512 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "frontière" and "frontières" also get mixed up with nearby pairs, the highest-scored neighbour is "frontières vs frontistes". Nearby pair

Confusion rank #430,512 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