Which to use
“ruff” and “rush” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #27,272
- “ruff” frequency rank
- #3,133
- “rush” frequency rank
- 30405
- confusion score
Side-by-Side Comparison
| Feature | ruff | rush |
|---|---|---|
| Definition | A circular frill or ruffle on a garment, especially a starched, fluted frill at the neck in Elizabethan and Jacobean England (1560s–1620s). | A sudden forward motion. |
Where the eye mixes ruff and rush
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses ruff with rush
A purely visual mix-up. ruff (/ɹʌf/) and rush (/ɹʌʃ/) 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 30405, derived from the frequency rank of both members and their visual similarity.
ruff is recorded at frequency rank #27,272, classified as anoun, pronounced /ɹʌf/. rush is at rank #3,133, tagged as anoun, pronounced /ɹʌʃ/.
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 30405, this pair ranks #354,840 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ruff vs rush
Shared letters: ru. Private to "ruff": f. Private to "rush": hs.
"ruff" · 4 letters · shape CVCC · "rush" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Can "ruff" and "rush" be used interchangeably?
Frequency check: "ruff" vs "rush" - which ranks higher?
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 "ruff" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "rush" - compare definitions side by side with the headword page. Word entry
- This pair ranks #354,840 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "ruff" and "rush" also get mixed up with nearby pairs, the highest-scored neighbour is "Rua vs ruff". 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 #354,840 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.