due vs duty, What's the Difference?

Which to use

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

#27,578
“due” frequency rank: #25,611
“duty” frequency rank: 53189
confusion score

Side-by-Side Comparison

Feature	due	duty
Definition	En segundo puesto.	Deber, obligación.

Where the spellings diverge

Shared letters are muted; the letters that actually set due and duty apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch

due

4 ch

duty

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: due is [ˈdu.e] while duty is /ˈdjuː.ti/. 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 noun), which is usually the fastest check. Our composite confusion score for this pair is 53189, derived from the frequency rank of both members and their visual similarity.

due is recorded at frequency rank #27,578, classified as anadv, pronounced [ˈdu.e]. duty is at rank #25,611, tagged as anoun, pronounced /ˈdjuː.ti/.

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 53189, this pair ranks #89,090 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of due vs duty

Shared letters: du. Private to "due": e. Private to "duty": ty.

"due" · 3 letters · shape CVV · "duty" · 4 letters · shape CVCV

Known mistypes of this pair

duty ← dduty · dtuy · dutty · dutyy · duyt · udty

Frequency comparison

due#27,578

duty#25,611

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "due" and "duty" be used interchangeably?

No - they are not even the same part of speech. "due" is an adverb and "duty" a noun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "due" or "duty"?

"duty" is the more common of the two: it sits at frequency rank #25,611 in our Spanish list, against #27,578 for "due". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering due vs duty

The fastest way to pick the right one every time.

Check the role first: if you need an adverb, it's “due”; for a noun, it's “duty”.
See each word in full, definition, IPA, etymology and its other confusables. Full “due” entry
Browse more pairs most likely to be confused. Most confusable