montagnevsmontagneuxTell them apart

Quick tell: montagne is a noun, montagneux is an adjective, so they fill different roles in a sentence.

Which to use

“montagne” is a noun and “montagneux” is an adjective - they look or sound alike but fill different roles in a sentence.

#2,001
“montagne” frequency rank
#25,741
“montagneux” frequency rank
27742
confusion score

Side-by-Side Comparison

Feature montagne montagneux
Definition Relief topographique présentant des versants prononcés (par opposition à « haut plateau » situé en altitude mais ne présentant pas le caractère montagneux). Où il y a beaucoup de montagnes.

Where the eye mixes montagne and montagneux

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

8 ch
montagne
10 ch
montagneux

Visual trap between montagne and montagneux

These two trip readers on the page rather than in the ear: montagne is \mɔ̃.taɲ\ while montagneux is \mɔ̃.ta.ɲø\. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “montagne” sits inside “montagneux”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 27742, derived from the frequency rank of both members and their visual similarity.

montagne is recorded at frequency rank #2,001, classified as anoun, pronounced \mɔ̃.taɲ\. montagneux is at rank #25,741, tagged as anadj, pronounced \mɔ̃.ta.ɲø\.

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 27742, this pair ranks #327,079 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of montagne vs montagneux

Shared letters: aegmnot. Private to "montagne": -. Private to "montagneux": ux.

"montagne" · 8 letters · shape CVCCVCCV  ·  "montagneux" · 10 letters · shape CVCCVCCVVC

Known mistypes of this pair

  • montagnemmontagne · mnotagne · monatgne · monntagne · montagen · montaggne · montagnne · montange
  • montagneuxmmontagneux · mnotagneux · monatgneux · monntagneux · montagenux · montaggneux · montagneuxx · montagnexu

Frequently Asked Questions

Do "montagne" and "montagneux" mean the same thing in a sentence?
No - they are not even the same part of speech. "montagne" is a noun and "montagneux" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "montagne" vs "montagneux" - which ranks higher?
"montagne" is the more common of the two: it sits at frequency rank #2,001 in our French list, against #25,741 for "montagneux". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "montagne" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "montagneux" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #327,079 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "montagne" and "montagneux" also get mixed up with nearby pairs, the highest-scored neighbour is "montagneuse vs montagneux". 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 #327,079 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