Which to use
“duct” is a noun and “due” is an adjective - they look or sound alike but fill different roles in a sentence.
- #13,330
- “duct” frequency rank
- #442
- “due” frequency rank
- 13772
- confusion score
Side-by-Side Comparison
| Feature | duct | due |
|---|---|---|
| Definition | A pipe, tube or canal which carries gas or liquid from one place to another. | Owed or owing. |
Where the eye mixes duct and due
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: duct vs due
These two trip readers on the page rather than in the ear: duct is /dʌkt/ while due is /djuː/. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 13772, derived from the frequency rank of both members and their visual similarity.
duct is recorded at frequency rank #13,330, classified as anoun, pronounced /dʌkt/. due is at rank #442, tagged as anadj, pronounced /djuː/.
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 13772, this pair ranks #473,901 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of duct vs due
Shared letters: du. Private to "duct": ct. Private to "due": e.
"duct" · 4 letters · shape CVCC · "due" · 3 letters · shape CVV
Known mistypes of this pair
- duct ← dcut · dduct · ducct · ductt · dutc · udct
Frequently Asked Questions
Can "duct" and "due" be used interchangeably?
In ordinary English text, does "duct" or "due" show up more?
After this comparison
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "duct" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "due" - compare definitions side by side with the headword page. Word entry
- This pair ranks #473,901 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "duct" and "due" also get mixed up with nearby pairs, the highest-scored neighbour is "DCC vs duct". 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 #473,901 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.