PermvsperosWhich spelling fits?

Quick tell: Perm is a name, peros is a noun, so they fill different roles in a sentence.

Which to use

“Perm” is a name and “peros” is a noun - they look or sound alike but fill different roles in a sentence.

#48,584
“Perm” frequency rank
#31,487
“peros” frequency rank
80071
confusion score

Side-by-Side Comparison

Feature Perm peros
Definition Ciudad de Rusia Forma del plural de pero.

Where the eye mixes Perm and peros

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. Perm runs 4 letters (CVCC) against peros's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
Perm
5 ch
peros

Visual trap between Perm and peros

These two trip readers on the page rather than in the ear: Perm is [ˈpeɾm] while peros is [ˈpeɾos]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (name vs noun), which is usually the fastest check. Our composite confusion score for this pair is 80071, derived from the frequency rank of both members and their visual similarity.

Perm is recorded at frequency rank #48,584, classified as aname, pronounced [ˈpeɾm]. peros is at rank #31,487, tagged as anoun, pronounced [ˈpeɾos].

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 80071, this pair ranks #12,148 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of Perm vs peros

Shared letters: epr. Private to "Perm": m. Private to "peros": os.

"Perm" · 4 letters · shape CVCC  ·  "peros" · 5 letters · shape CVCVC

Known mistypes of this pair

  • Perm ← eprm · pemr · permm · perrm · pperm · prem
  • peros ← epros · peors · peross · pperos · preos

Frequently Asked Questions

Is swapping "Perm" for "peros" ever safe?
No - they are not even the same part of speech. "Perm" is a name and "peros" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "Perm" or "peros" show up more?
"peros" is the more common of the two: it sits at frequency rank #31,487 in our Spanish list, against #48,584 for "Perm". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "Perm" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "peros" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #12,148 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "Perm" and "peros" also get mixed up with nearby pairs, the highest-scored neighbour is "Perm vs PRC". 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 #12,148 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