regulavsrehúsaWhich spelling fits?

Which to use

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

#10,564
“regula” frequency rank
#39,961
“rehúsa” frequency rank
50525
confusion score

Side-by-Side Comparison

Feature regula rehúsa
Definition Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del presente de indicativo de regular. Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del presente de indicativo de rehusar o de rehusarse.

Where the eye mixes regula and rehúsa

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. regula and rehúsa follow the identical consonant-vowel pattern (CVCVCV). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
regula
6 ch
rehúsa

Why the eye confuses regula with rehúsa

A purely visual mix-up. regula ([reˈɣ̞ula]) and rehúsa ([reˈusa]) 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 3 positions. Our composite confusion score for this pair is 50525, derived from the frequency rank of both members and their visual similarity.

regula is recorded at frequency rank #10,564, classified as averb, pronounced [reˈɣ̞ula]. rehúsa is at rank #39,961, tagged as averb, pronounced [reˈusa].

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 50525, this pair ranks #102,728 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of regula vs rehúsa

Shared letters: aer. Private to "regula": glu. Private to "rehúsa": hsú.

"regula" · 6 letters · shape CVCVCV  ·  "rehúsa" · 6 letters · shape CVCVCV

Known mistypes of this pair

  • regula ← ergula · reggula · reglua · regual · regulla · reugla · rgeula · rregula

Frequently Asked Questions

Can "regula" and "rehúsa" be used interchangeably?
No. They are said differently ([reˈɣ̞ula] versus [reˈusa]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "regula" vs "rehúsa" - which ranks higher?
"regula" is the more common of the two: it sits at frequency rank #10,564 in our Spanish list, against #39,961 for "rehúsa". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "regula" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "rehúsa" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #102,728 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "regula" and "rehúsa" also get mixed up with nearby pairs, the highest-scored neighbour is "rebasa vs rehúsa". 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 #102,728 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