pecsvsperiTell them apart

Which to use

“pecs” and “peri” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#49,538
“pecs” frequency rank
#29,415
“peri” frequency rank
78953
confusion score

Side-by-Side Comparison

Feature pecs peri
Definition plural of pec A sprite or supernatural being.

Where the eye mixes pecs and peri

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. pecs (CVCC) and peri (CVCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

4 ch
pecs
4 ch
peri

Visual trap between pecs and peri

A purely visual mix-up. pecs (/pɛks/) and peri (/ˈpɪə.ɹi/) 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 78953, derived from the frequency rank of both members and their visual similarity.

pecs is recorded at frequency rank #49,538, classified as anoun, pronounced /pɛks/. peri is at rank #29,415, tagged as anoun, pronounced /ˈpɪə.ɹi/.

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 78953, this pair ranks #23,344 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of pecs vs peri

Shared letters: ep. Private to "pecs": cs. Private to "peri": ir.

"pecs" · 4 letters · shape CVCC  ·  "peri" · 4 letters · shape CVCV

Known mistypes of this pair

  • pecs ← epcs · pces · peccs · pecss · pesc · ppecs
  • peri ← epri · perri · pperi · prei

Frequently Asked Questions

Is swapping "pecs" for "peri" ever safe?
No. They are said differently (/pɛks/ versus /ˈpɪə.ɹi/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "pecs" or "peri" show up more?
"peri" is the more common of the two: it sits at frequency rank #29,415 in our English list, against #49,538 for "pecs". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "pecs" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "peri" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #23,344 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "pecs" and "peri" also get mixed up with nearby pairs, the highest-scored neighbour is "peasy vs pecs". 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 #23,344 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list