Which to use
“perf” and “pure” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #42,815
- “perf” frequency rank
- #2,308
- “pure” frequency rank
- 45123
- confusion score
Side-by-Side Comparison
| Feature | perf | pure |
|---|---|---|
| Definition | Abbreviation of perforated; when followed by a number, eg, perf 14, this indicates the number of perforations per two centimetres. | Free of flaws or imperfections; unsullied. |
Where the eye mixes perf and pure
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses perf with pure
A purely visual mix-up. perf (/pɜː(ɹ)f/) and pure (/ˈpjʊə(ɹ)/) 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 45123, derived from the frequency rank of both members and their visual similarity.
perf is recorded at frequency rank #42,815, classified as anadj, pronounced /pɜː(ɹ)f/. pure is at rank #2,308, tagged as anadj, pronounced /ˈpjʊə(ɹ)/.
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 45123, this pair ranks #224,209 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of perf vs pure
Shared letters: epr. Private to "perf": f. Private to "pure": u.
"perf" · 4 letters · shape CVCC · "pure" · 4 letters · shape CVCV
Known mistypes of this pair
Frequently Asked Questions
Can "perf" and "pure" be used interchangeably?
Frequency check: "perf" vs "pure" - which ranks higher?
What to do next
Eye-level mix-up between "perf" and "pure" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "perf" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "pure" - compare definitions side by side with the headword page. Word entry
- This pair ranks #224,209 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "perf" and "pure" 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 #224,209 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.