Which to use
“duly” is an adverb and “dusky” is an adjective - they look or sound alike but fill different roles in a sentence.
- #16,220
- “duly” frequency rank
- #35,700
- “dusky” frequency rank
- 51920
- confusion score
Side-by-Side Comparison
| Feature | duly | dusky |
|---|---|---|
| Definition | In a due, fit, or becoming manner; as it ought to be; suitably; properly. | Dimly lit, as at dusk (evening). |
Where the eye mixes duly and dusky
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. duly runs 4 letters (CVCV) against dusky's 5 (CVCCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between duly and dusky
These two trip readers on the page rather than in the ear: duly is /ˈdʒuːli/ while dusky is /ˈdʌs.ki/. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 51920, derived from the frequency rank of both members and their visual similarity.
duly is recorded at frequency rank #16,220, classified as anadv, pronounced /ˈdʒuːli/. 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 51920, this pair ranks #161,383 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of duly vs dusky
Shared letters: duy. Private to "duly": l. Private to "dusky": ks.
"duly" · 4 letters · shape CVCV · "dusky" · 5 letters · shape CVCCV
Known mistypes of this pair
Frequently Asked Questions
Can "duly" and "dusky" be used interchangeably?
Frequency check: "duly" vs "dusky" - which ranks higher?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "duly" 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 #161,383 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "duly" 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 #161,383 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.