Which to use
“perm” and “PM” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #24,863
- “perm” frequency rank
- #2,086
- “PM” frequency rank
- 26949
- confusion score
Side-by-Side Comparison
| Feature | perm | PM |
|---|---|---|
| Definition | Clipping of permanent wave (“hairstyle”). | Initialism of post mortem. |
Where the eye mixes perm and PM
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between perm and PM
A purely visual mix-up. perm (/pɝm/) and PM (/ˌpiː ˈɛm/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 letter(s) in length. Our composite confusion score for this pair is 26949, derived from the frequency rank of both members and their visual similarity.
perm is recorded at frequency rank #24,863, classified as anoun, pronounced /pɝm/. PM is at rank #2,086, tagged as anoun, pronounced /ˌpiː ˈɛm/.
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 26949, this pair ranks #382,806 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of perm vs PM
Shared letters: mp. Private to "perm": er. Private to "PM": -.
"perm" · 4 letters · shape CVCC · "PM" · 2 letters · shape CC
Known mistypes of this pair
- perm ← eprm · pemr · permm · perrm · pperm
Frequently Asked Questions
Do "perm" and "PM" mean the same thing in a sentence?
Frequency check: "perm" vs "PM" - which ranks higher?
Useful next steps
Eye-level mix-up between "perm" and "PM" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "perm" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "PM" - compare definitions side by side with the headword page. Word entry
- This pair ranks #382,806 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "perm" and "PM" also get mixed up with nearby pairs, the highest-scored neighbour is "pecs vs perm". 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 #382,806 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.