pionniervspionnièresWhich spelling fits?

Which to use

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

#15,206
“pionnier” frequency rank
#45,227
“pionnières” frequency rank
60433
confusion score

Side-by-Side Comparison

Feature pionnier pionnières
Definition Soldat appartenant à une section spécialisée dans les travaux de construction, de terrassement ou de manutention. Pluriel de pionnière.

Where the eye mixes pionnier and pionnières

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. pionnier runs 8 letters (CVVCCVVC) against pionnières's 10 (CVVCCVVCVC) - the length gap alone is often enough to separate them once you know to check it.

8 ch
pionnier
10 ch
pionnières

Why the eye confuses pionnier with pionnières

A purely visual mix-up. pionnier (\pjɔ.nje\) and pionnières (\pjɔ.njɛʁ\) 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 60433, derived from the frequency rank of both members and their visual similarity.

pionnier is recorded at frequency rank #15,206, classified as anoun, pronounced \pjɔ.nje\. pionnières is at rank #45,227, tagged as anoun, pronounced \pjɔ.njɛʁ\.

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 60433, this pair ranks #97,617 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of pionnier vs pionnières

Shared letters: einopr. Private to "pionnier": -. Private to "pionnières": sè.

"pionnier" · 8 letters · shape CVVCCVVC  ·  "pionnières" · 10 letters · shape CVVCCVVCVC

Known mistypes of this pair

  • pionnier ← iponnier · pinonier · pionier · pioniner · pionneir · pionnierr · pionnire · poinnier

Frequently Asked Questions

Do "pionnier" and "pionnières" mean the same thing in a sentence?
No. They are said differently (\pjɔ.nje\ versus \pjɔ.njɛʁ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "pionnier" or "pionnières"?
"pionnier" is the more common of the two: it sits at frequency rank #15,206 in our French list, against #45,227 for "pionnières". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "pionnier" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "pionnières" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #97,617 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "pionnier" and "pionnières" also get mixed up with nearby pairs, the highest-scored neighbour is "pionnières vs prisonnières". 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 #97,617 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