Which to use
“shill” and “sill” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #42,892
- “shill” frequency rank
- #29,086
- “sill” frequency rank
- 71978
- confusion score
Side-by-Side Comparison
| Feature | shill | sill |
|---|---|---|
| Definition | A person paid to endorse a product while pretending to be impartial. | A breast wall; window breast; horizontal brink which forms the base of a window. |
Where the eye mixes shill and sill
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. shill runs 5 letters (CCVCC) against sill's 4 (CVCC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses shill with sill
A purely visual mix-up. shill (/ʃɪl/) and sill (/sɪl/) 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 71978, derived from the frequency rank of both members and their visual similarity.
shill is recorded at frequency rank #42,892, classified as anoun, pronounced /ʃɪl/. sill is at rank #29,086, tagged as anoun, pronounced /sɪl/.
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 71978, this pair ranks #44,661 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of shill vs sill
Shared letters: ils. Private to "shill": h. Private to "sill": -.
"shill" · 5 letters · shape CCVCC · "sill" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Can "shill" and "sill" be used interchangeably?
Which is more common, "shill" or "sill"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "shill" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sill" - compare definitions side by side with the headword page. Word entry
- This pair ranks #44,661 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "shill" and "sill" also get mixed up with nearby pairs, the highest-scored neighbour is "shill vs spiel". 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 #44,661 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.