dutyvsdyWhich spelling fits?

Quick tell: duty is a noun, dy is a verb, so they fill different roles in a sentence.

Which to use

“duty” is a noun and “dy” is a verb - they look or sound alike but fill different roles in a sentence.

#1,994
“duty” frequency rank
#29,635
“dy” frequency rank
31629
confusion score

Side-by-Side Comparison

Feature duty dy
Definition That which one is morally or legally obligated to do. Obsolete form of die.

Letter map: duty vs dy

Shared letters muted; letters that set duty and dy apart highlighted. Shared run: 2.

4 ch
duty
2 ch
dy

Role in the sentence - duty and dy

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: duty is anoun and dyaverb. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 31629, derived from the frequency rank of both members and their visual similarity.

duty is recorded at frequency rank #1,994, classified as anoun, pronounced /ˈdjuː.ti/. dy is at rank #29,635, tagged as averb.

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 31629, this pair ranks #344,559 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of duty vs dy

Shared letters: dy. Private to "duty": tu. Private to "dy": -.

"duty" · 4 letters · shape CVCV  ·  "dy" · 2 letters · shape CV

Known mistypes of this pair

  • dutydduty · dtuy · dutty · dutyy · duyt · udty

Frequently Asked Questions

Do "duty" and "dy" mean the same thing in a sentence?
No - they are not even the same part of speech. "duty" is a noun and "dy" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "duty" vs "dy" - which ranks higher?
"duty" is the more common of the two: it sits at frequency rank #1,994 in our English list, against #29,635 for "dy". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Done with this confusable. These links stay specific to "duty" and "dy".

  • Full dictionary entry for "duty" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "dy" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #344,559 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "duty" and "dy" also get mixed up with nearby pairs, the highest-scored neighbour is "dox vs dy". 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 #344,559 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