Which to use
“shrill” is an adjective and “sill” is a noun - they look or sound alike but fill different roles in a sentence.
- #33,847
- “shrill” frequency rank
- #29,086
- “sill” frequency rank
- 62933
- confusion score
Side-by-Side Comparison
| Feature | shrill | sill |
|---|---|---|
| Definition | High-pitched and piercing. | A breast wall; window breast; horizontal brink which forms the base of a window. |
Where the eye mixes shrill and sill
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. shrill runs 6 letters (CCCVCC) 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 shrill with sill
These two trip readers on the page rather than in the ear: shrill is /ʃɹɪl/ while sill is /sɪl/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 62933, derived from the frequency rank of both members and their visual similarity.
shrill is recorded at frequency rank #33,847, classified as anadj, pronounced /ʃɹɪl/. 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 62933, this pair ranks #85,735 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of shrill vs sill
Shared letters: ils. Private to "shrill": hr. Private to "sill": -.
"shrill" · 6 letters · shape CCCVCC · "sill" · 4 letters · shape CVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "shrill" for "sill" ever safe?
Frequency check: "shrill" vs "sill" - which ranks higher?
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 "shrill" 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 #85,735 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "shrill" and "sill" also get mixed up with nearby pairs, the highest-scored neighbour is "Sif vs sill". 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 #85,735 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.