penosavsperosTell them apart

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

Which to use

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

#28,869
“penosa” frequency rank
#31,487
“peros” frequency rank
60356
confusion score

Side-by-Side Comparison

Feature penosa peros
Definition Forma del femenino de penoso. Forma del plural de pero.

Where the eye mixes penosa and peros

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. penosa runs 6 letters (CVCVCV) against peros's 5 (CVCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
penosa
5 ch
peros

Look-alike desk: penosa vs peros

These two trip readers on the page rather than in the ear: penosa is [peˈnosa] 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 60356, derived from the frequency rank of both members and their visual similarity.

penosa is recorded at frequency rank #28,869, classified as anadj, pronounced [peˈnosa]. 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 60356, this pair ranks #59,230 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of penosa vs peros

Shared letters: eops. Private to "penosa": an. Private to "peros": r.

"penosa" · 6 letters · shape CVCVCV  ·  "peros" · 5 letters · shape CVCVC

Known mistypes of this pair

  • penosa ← epnosa · pennosa · penoas · penossa · pensoa · peonsa · pneosa · ppenosa
  • peros ← epros · peors · peross · pperos · preos

Frequently Asked Questions

Is swapping "penosa" for "peros" ever safe?
No - they are not even the same part of speech. "penosa" is an adjective and "peros" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "penosa" vs "peros" - which ranks higher?
"penosa" is the more common of the two: it sits at frequency rank #28,869 in our Spanish list, against #31,487 for "peros". 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 "penosa" and "peros" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "penosa" 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 #59,230 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "penosa" and "peros" also get mixed up with nearby pairs, the highest-scored neighbour is "Perm vs peros". 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 #59,230 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