duchyvsduskyWhich spelling fits?

Quick tell: duchy is a noun, dusky is an adjective, so they fill different roles in a sentence.

Which to use

“duchy” is a noun and “dusky” is an adjective - they look or sound alike but fill different roles in a sentence.

#28,900
“duchy” frequency rank
#35,700
“dusky” frequency rank
64600
confusion score

Side-by-Side Comparison

Feature duchy dusky
Definition A dominion or region ruled by a duke or duchess. Dimly lit, as at dusk (evening).

Where the eye mixes duchy and dusky

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. duchy and dusky follow the identical consonant-vowel pattern (CVCCV). Same shape at a glance is often the real trap, independent of shared letters.

5 ch
duchy
5 ch
dusky

Look-alike desk: duchy vs dusky

These two trip readers on the page rather than in the ear: duchy is /ˈdʌt͡ʃi/ 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 64600, derived from the frequency rank of both members and their visual similarity.

duchy is recorded at frequency rank #28,900, classified as anoun, pronounced /ˈdʌt͡ʃi/. 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 64600, this pair ranks #76,902 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of duchy vs dusky

Shared letters: duy. Private to "duchy": ch. Private to "dusky": ks.

"duchy" · 5 letters · shape CVCCV  ·  "dusky" · 5 letters · shape CVCCV

Known mistypes of this pair

  • duchy ← dcuhy · dduchy · ducchy · duchhy · duchyy · ducyh · duhcy · udchy
  • dusky ← ddusky · dsuky · duksy · duskky · duskyy · dussky · dusyk · udsky

Frequently Asked Questions

Is swapping "duchy" for "dusky" ever safe?
No - they are not even the same part of speech. "duchy" is a noun and "dusky" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "duchy" vs "dusky" - which ranks higher?
"duchy" is the more common of the two: it sits at frequency rank #28,900 in our English list, against #35,700 for "dusky". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "duchy" 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 #76,902 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "duchy" 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 #76,902 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list