casosvscuposWhich spelling fits?

Which to use

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

#466
“casos” frequency rank
#15,581
“cupos” frequency rank
16047
confusion score

Side-by-Side Comparison

Feature casos cupos
Definition Forma del plural de caso. Forma del plural de cupo.

Where the eye mixes casos and cupos

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

5 ch
casos
5 ch
cupos

Visual trap between casos and cupos

A purely visual mix-up. casos ([ˈkasos]) and cupos ([ˈkupos]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 16047, derived from the frequency rank of both members and their visual similarity.

casos is recorded at frequency rank #466, classified as anoun, pronounced [ˈkasos]. cupos is at rank #15,581, tagged as anoun, pronounced [ˈkupos].

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 16047, this pair ranks #277,730 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of casos vs cupos

Shared letters: cos. Private to "casos": a. Private to "cupos": pu.

"casos" · 5 letters · shape CVCVC  ·  "cupos" · 5 letters · shape CVCVC

Known mistypes of this pair

  • casosacsos · caoss · casoss · cassos · ccasos · csaos
  • cuposccupos · cpuos · cuops · cuposs · cuppos · cupso · ucpos

Frequently Asked Questions

Can "casos" and "cupos" be used interchangeably?
No. They are said differently ([ˈkasos] versus [ˈkupos]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary Spanish text, does "casos" or "cupos" show up more?
"casos" is the more common of the two: it sits at frequency rank #466 in our Spanish list, against #15,581 for "cupos". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "casos" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cupos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #277,730 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "casos" and "cupos" also get mixed up with nearby pairs, the highest-scored neighbour is "cupos vs curo". 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 #277,730 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