mervsmesConfusable pair

Which to use

“mer” and “mes” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#21,067
“mer” frequency rank
#403
“mes” frequency rank
21470
confusion score

Side-by-Side Comparison

Feature mer mes
Definition Mar. Cada una de las doce partes, de duración variable según el sistema pero similar al ciclo lunar, en que se divide el año.

Where the eye mixes mer and mes

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch
mer
3 ch
mes

Why the eye confuses mer with mes

A purely visual mix-up. mer ([mɛʁ]) and mes ([ˈmes]) 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 a single letter - r in “mer” becomes s in “mes”. Our composite confusion score for this pair is 21470, derived from the frequency rank of both members and their visual similarity.

mer is recorded at frequency rank #21,067, classified as anoun, pronounced [mɛʁ]. mes is at rank #403, tagged as anoun, pronounced [ˈmes].

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 21470, this pair ranks #254,803 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of mer vs mes

Shared letters: em. Private to "mer": r. Private to "mes": s.

"mer" · 3 letters · shape CVC  ·  "mes" · 3 letters · shape CVC

Frequently Asked Questions

Can "mer" and "mes" be used interchangeably?
No. They are said differently ([mɛʁ] versus [ˈmes]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "mer" vs "mes" - which ranks higher?
"mes" is the more common of the two: it sits at frequency rank #403 in our Spanish list, against #21,067 for "mer". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "mer" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "mes" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #254,803 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "mer" and "mes" also get mixed up with nearby pairs, the highest-scored neighbour is "mer vs mur". Nearby pair

Confusion rank #254,803 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list