Which to use
“sphincter” and “splinter” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #39,102
- “sphincter” frequency rank
- #20,231
- “splinter” frequency rank
- 59333
- confusion score
Side-by-Side Comparison
| Feature | sphincter | splinter |
|---|---|---|
| Definition | A ringlike band of muscle that surrounds a bodily opening (such as the anus or the openings of the stomach), constricting and relaxing as required for normal physiological functioning. | A long, sharp fragment of material, often wood. |
Where the eye mixes sphincter and splinter
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.
Why the eye confuses sphincter with splinter
A purely visual mix-up. sphincter (/ˈsfɪŋk.tɚ/) and splinter (/ˈsplɪn.tə(ɹ)/) 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 1 letter(s) in length. Our composite confusion score for this pair is 59333, derived from the frequency rank of both members and their visual similarity.
sphincter is recorded at frequency rank #39,102, classified as anoun, pronounced /ˈsfɪŋk.tɚ/. splinter is at rank #20,231, tagged as anoun, pronounced /ˈsplɪn.tə(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 59333, this pair ranks #106,857 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of sphincter vs splinter
Shared letters: einprst. Private to "sphincter": ch. Private to "splinter": l.
"sphincter" · 9 letters · shape CCCVCCCVC · "splinter" · 8 letters · shape CCCVCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "sphincter" for "splinter" ever safe?
Frequency check: "sphincter" vs "splinter" - which ranks higher?
After this comparison
Eye-level mix-up between "sphincter" and "splinter" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "sphincter" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "splinter" - compare definitions side by side with the headword page. Word entry
- This pair ranks #106,857 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sphincter" and "splinter" also get mixed up with nearby pairs, the highest-scored neighbour is "sphincter vs spinster". 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 #106,857 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.