Which to use
“sinus” is a noun and “snug” is an adjective - they look or sound alike but fill different roles in a sentence.
- #20,225
- “sinus” frequency rank
- #25,585
- “snug” frequency rank
- 45810
- confusion score
Side-by-Side Comparison
| Feature | sinus | snug |
|---|---|---|
| Definition | A pouch or cavity in a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities (the paranasal sinus). | Warm and comfortable; cosy. |
Where the eye mixes sinus and snug
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses sinus with snug
These two trip readers on the page rather than in the ear: sinus is /ˈsaɪ.nəs/ while snug is /snʌɡ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 45810, derived from the frequency rank of both members and their visual similarity.
sinus is recorded at frequency rank #20,225, classified as anoun, pronounced /ˈsaɪ.nəs/. snug is at rank #25,585, tagged as anadj, pronounced /snʌɡ/.
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 45810, this pair ranks #217,714 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of sinus vs snug
Shared letters: nsu. Private to "sinus": i. Private to "snug": g.
"sinus" · 5 letters · shape CVCVC · "snug" · 4 letters · shape CCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "sinus" for "snug" ever safe?
In ordinary English text, does "sinus" or "snug" show up more?
After this comparison
Eye-level mix-up between "sinus" and "snug" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "sinus" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "snug" - compare definitions side by side with the headword page. Word entry
- This pair ranks #217,714 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "sinus" and "snug" also get mixed up with nearby pairs, the highest-scored neighbour is "SNA vs snug". 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 #217,714 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.