Which to use
“perp” and “plop” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #44,400
- “perp” frequency rank
- #46,702
- “plop” frequency rank
- 91102
- confusion score
Side-by-Side Comparison
| Feature | perp | plop |
|---|---|---|
| Definition | A perpetrator. | A sound or action like liquid hitting a hard surface, or an object falling into a body of water. |
Where the eye mixes perp and plop
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. perp (CVCC) and plop (CCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Visual trap between perp and plop
A purely visual mix-up. perp (/pɝp/) and plop (/plɒp/) 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 91102, derived from the frequency rank of both members and their visual similarity.
perp is recorded at frequency rank #44,400, classified as anoun, pronounced /pɝp/. plop is at rank #46,702, tagged as anoun, pronounced /plɒp/.
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 91102, this pair ranks #3,567 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of perp vs plop
Shared letters: p. Private to "perp": er. Private to "plop": lo.
"perp" · 4 letters · shape CVCC · "plop" · 4 letters · shape CCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "perp" for "plop" ever safe?
Which is more common, "perp" or "plop"?
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 "perp" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "plop" - compare definitions side by side with the headword page. Word entry
- This pair ranks #3,567 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "perp" and "plop" also get mixed up with nearby pairs, the highest-scored neighbour is "plop vs poops". 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 #3,567 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.