Which to use
“Percy” is a name and “perf” is an adjective - they look or sound alike but fill different roles in a sentence.
- #11,934
- “Percy” frequency rank
- #42,815
- “perf” frequency rank
- 54749
- confusion score
Side-by-Side Comparison
| Feature | Percy | perf |
|---|---|---|
| Definition | An English surname from Old French. | Abbreviation of perforated; when followed by a number, eg, perf 14, this indicates the number of perforations per two centimetres. |
Where the eye mixes Percy and perf
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. Percy runs 5 letters (CVCCV) against perf's 4 (CVCC) - the length gap alone is often enough to separate them once you know to check it.
Look-alike desk: Percy vs perf
These two trip readers on the page rather than in the ear: Percy is /ˈpɜːsi/ while perf is /pɜː(ɹ)f/. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 54749, derived from the frequency rank of both members and their visual similarity.
Percy is recorded at frequency rank #11,934, classified as aname, pronounced /ˈpɜːsi/. perf is at rank #42,815, tagged as anadj, pronounced /pɜː(ɹ)f/.
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 54749, this pair ranks #138,736 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Percy vs perf
Shared letters: epr. Private to "Percy": cy. Private to "perf": f.
"Percy" · 5 letters · shape CVCCV · "perf" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Do "Percy" and "perf" mean the same thing in a sentence?
Which is more common, "Percy" or "perf"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "Percy" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "perf" - compare definitions side by side with the headword page. Word entry
- This pair ranks #138,736 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "Percy" and "perf" also get mixed up with nearby pairs, the highest-scored neighbour is "pecs vs perf". 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 #138,736 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.