marshvsmersConfusable pair

Which to use

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

#28,247
“marsh” frequency rank
#8,271
“mers” frequency rank
36518
confusion score

Side-by-Side Comparison

Feature marsh mers
Definition Marais, marécage. Pluriel de mer.

Where the eye mixes marsh and mers

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
marsh
4 ch
mers

Visual trap between marsh and mers

A purely visual mix-up. marsh (\mɑɹʃ\) and mers (\mɛʁ\) 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 1 letter(s) in length. Our composite confusion score for this pair is 36518, derived from the frequency rank of both members and their visual similarity.

marsh is recorded at frequency rank #28,247, classified as anoun, pronounced \mɑɹʃ\. mers is at rank #8,271, tagged as anoun, pronounced \mɛʁ\.

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 36518, this pair ranks #269,033 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of marsh vs mers

Shared letters: mrs. Private to "marsh": ah. Private to "mers": e.

"marsh" · 5 letters · shape CVCCC  ·  "mers" · 4 letters · shape CVCC

Known mistypes of this pair

  • marshamrsh · marhs · marrsh · marshh · marssh · masrh · mmarsh · mrash
  • mersemrs · merrs · merss · mesr · mmers · mres

Frequently Asked Questions

Is swapping "marsh" for "mers" ever safe?
No. They are said differently (\mɑɹʃ\ versus \mɛʁ\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary French text, does "marsh" or "mers" show up more?
"mers" is the more common of the two: it sits at frequency rank #8,271 in our French list, against #28,247 for "marsh". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "marsh" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mers" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #269,033 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "marsh" and "mers" also get mixed up with nearby pairs, the highest-scored neighbour is "Marcy vs marsh". 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 #269,033 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