Which to use
“solely” is an adverb and “sully” is a verb - they look or sound alike but fill different roles in a sentence.
- #5,164
- “solely” frequency rank
- #25,227
- “sully” frequency rank
- 30391
- confusion score
Side-by-Side Comparison
| Feature | solely | sully |
|---|---|---|
| Definition | Alone; exclusively. | To soil or stain; to dirty. |
Where the eye mixes solely and sully
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. solely runs 6 letters (CVCVCV) against sully's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between solely and sully
These two trip readers on the page rather than in the ear: solely is /ˈsəʊl.li/ while sully is /ˈsʌli/. 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 (adverb vs verb), which is usually the fastest check. Our composite confusion score for this pair is 30391, derived from the frequency rank of both members and their visual similarity.
solely is recorded at frequency rank #5,164, classified as anadv, pronounced /ˈsəʊl.li/. sully is at rank #25,227, tagged as averb, pronounced /ˈsʌli/.
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 30391, this pair ranks #354,950 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of solely vs sully
Shared letters: lsy. Private to "solely": eo. Private to "sully": u.
"solely" · 6 letters · shape CVCVCV · "sully" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Can "solely" and "sully" be used interchangeably?
Frequency check: "solely" vs "sully" - which ranks higher?
Useful next steps
Eye-level mix-up between "solely" and "sully" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "solely" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sully" - compare definitions side by side with the headword page. Word entry
- This pair ranks #354,950 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "solely" and "sully" also get mixed up with nearby pairs, the highest-scored neighbour is "sully vs surry". 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 #354,950 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.