duckvsdueWhich spelling fits?

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

Which to use

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

#34,070
“duck” frequency rank
#27,578
“due” frequency rank
61648
confusion score

Side-by-Side Comparison

Feature duck due
Definition Pato. En segundo puesto.

Where the eye mixes duck and due

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
duck
3 ch
due

Look-alike desk: duck vs due

These two trip readers on the page rather than in the ear: duck is /dʌk/ while due is [ˈdu.e]. 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 adverb), which is usually the fastest check. Our composite confusion score for this pair is 61648, derived from the frequency rank of both members and their visual similarity.

duck is recorded at frequency rank #34,070, classified as anoun, pronounced /dʌk/. due is at rank #27,578, tagged as anadv, pronounced [ˈdu.e].

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 61648, this pair ranks #54,725 of 323,831 scored Spanish 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 adverb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "duck" or "due" show up more?
"due" is the more common of the two: it sits at frequency rank #27,578 in our Spanish list, against #34,070 for "duck". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "duck" and "due" is sorted above. Next: full entries or other pairs that share a letter shape.

  • 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 #54,725 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "duck" and "due" also get mixed up with nearby pairs, the highest-scored neighbour is "duck vs ducto". 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 #54,725 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list