duckvsdueWhich spelling fits?

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

Which to use

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

#23,302
“duck” frequency rank
#24,954
“due” frequency rank
48256
confusion score

Side-by-Side Comparison

Feature duck due
Definition pato devido

Letter map: duck vs due

Shared letters muted; letters that set duck and due apart highlighted. Shared run: 2.

4 ch
duck
3 ch
due

Grammar separator: duck vs due

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: duck is anoun and dueanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 48256, derived from the frequency rank of both members and their visual similarity.

duck is recorded at frequency rank #23,302, classified as anoun. due is at rank #24,954, tagged as anadj, pronounced /dju/.

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 48256, this pair ranks #16,934 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of duck vs due

Shared letters: du. Private to "duck": ck. Private to "due": e.

"duck" · 4 letters · shape CVCC  ·  "due" · 3 letters · shape CVV

Known mistypes of this pair

  • duckdcuk · dduck · ducck · duckk · dukc · udck

Frequently Asked Questions

Is swapping "duck" for "due" ever safe?
No - they are not even the same part of speech. "duck" is a noun and "due" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "duck" or "due" show up more?
"duck" is the more common of the two: it sits at frequency rank #23,302 in our Portuguese list, against #24,954 for "due". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "duck" and "due". Here's where to go from here.

  • Full dictionary entry for "duck" 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 #16,934 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "duck" and "due" also get mixed up with nearby pairs, the highest-scored neighbour is "dat vs due". 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 #16,934 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list