Which to use
“peak” is a noun and “per” is a preposition - they look or sound alike but fill different roles in a sentence.
- #2,847
- “peak” frequency rank
- #339
- “per” frequency rank
- 3186
- confusion score
Side-by-Side Comparison
| Feature | peak | per |
|---|---|---|
| Definition | A point; the sharp end or top of anything that terminates in a point; as, the peak, or front, of a cap. | For each. |
Where the eye mixes peak and per
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between peak and per
These two trip readers on the page rather than in the ear: peak is /piːk/ while per is /pɜː/. 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 (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 3186, derived from the frequency rank of both members and their visual similarity.
peak is recorded at frequency rank #2,847, classified as anoun, pronounced /piːk/. per is at rank #339, tagged as aprep, pronounced /pɜː/.
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 3186, this pair ranks #522,850 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of peak vs per
Shared letters: ep. Private to "peak": ak. Private to "per": r.
"peak" · 4 letters · shape CVVC · "per" · 3 letters · shape CVC
Known mistypes of this pair
- peak ← epak · paek · peakk · peka · ppeak
Frequently Asked Questions
Do "peak" and "per" mean the same thing in a sentence?
Which is more common, "peak" or "per"?
What to do next
Eye-level mix-up between "peak" and "per" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "peak" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "per" - compare definitions side by side with the headword page. Word entry
- This pair ranks #522,850 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "peak" and "per" also get mixed up with nearby pairs, the highest-scored neighbour is "peak vs PPA". 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 #522,850 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.