Which to use
“Duffy” is a name and “dusky” is an adjective - they look or sound alike but fill different roles in a sentence.
- #16,897
- “Duffy” frequency rank
- #35,700
- “dusky” frequency rank
- 52597
- confusion score
Side-by-Side Comparison
| Feature | Duffy | dusky |
|---|---|---|
| Definition | A surname from Irish, an anglicization of Ó Dubhthaigh (“descendant of Dubhthach”). Dubhthach is a byname derived from dubh (“black”). | Dimly lit, as at dusk (evening). |
Where the eye mixes Duffy and dusky
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses Duffy with dusky
These two trip readers on the page rather than in the ear: Duffy is /ˈdʌfi/ while dusky is /ˈdʌs.ki/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (name vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 52597, derived from the frequency rank of both members and their visual similarity.
Duffy is recorded at frequency rank #16,897, classified as aname, pronounced /ˈdʌfi/. dusky is at rank #35,700, tagged as anadj, pronounced /ˈdʌs.ki/.
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 52597, this pair ranks #155,740 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of Duffy vs dusky
Shared letters: duy. Private to "Duffy": f. Private to "dusky": ks.
"Duffy" · 5 letters · shape CVCCV · "dusky" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Do "Duffy" and "dusky" mean the same thing in a sentence?
Which is more common, "Duffy" or "dusky"?
What to do next
Eye-level mix-up between "Duffy" and "dusky" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "Duffy" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "dusky" - compare definitions side by side with the headword page. Word entry
- This pair ranks #155,740 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "Duffy" and "dusky" also get mixed up with nearby pairs, the highest-scored neighbour is "dinky vs dusky". 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 #155,740 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.