ducalvsduckWhich spelling fits?

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

Which to use

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

#34,991
“ducal” frequency rank
#25,624
“duck” frequency rank
60615
confusion score

Side-by-Side Comparison

Feature ducal duck
Definition Qui appartient, qui est propre à un duc, à une duchesse. Toile épaisse et résistante utilisée pour des bâches, de tentes, des voiles, etc.

Letter map: ducal vs duck

Shared letters muted; letters that set ducal and duck apart highlighted. Shared run: 3. ducal runs 5 letters (CVCVC) against duck's 4 (CVCC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
ducal
4 ch
duck

Part-of-speech tell for ducal / duck

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ducal is anadjective and duckanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 60615, derived from the frequency rank of both members and their visual similarity.

ducal is recorded at frequency rank #34,991, classified as anadj, pronounced \dy.kal\. duck is at rank #25,624, tagged as anoun.

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 60615, this pair ranks #96,710 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of ducal vs duck

Shared letters: cdu. Private to "ducal": al. Private to "duck": k.

"ducal" · 5 letters · shape CVCVC  ·  "duck" · 4 letters · shape CVCC

Known mistypes of this pair

  • ducal ← dcual · dducal · duacl · ducall · duccal · ducla · udcal
  • duck ← dcuk · dduck · ducck · duckk · dukc · udck

Frequently Asked Questions

Is swapping "ducal" for "duck" ever safe?
No - they are not even the same part of speech. "ducal" is an adjective and "duck" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "ducal" or "duck" show up more?
"duck" is the more common of the two: it sits at frequency rank #25,624 in our French list, against #34,991 for "ducal". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "ducal" vs "duck" is on the table, pick a follow-up below.

  • Full dictionary entry for "ducal" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "duck" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #96,710 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ducal" and "duck" also get mixed up with nearby pairs, the highest-scored neighbour is "ducal vs ducon". 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 #96,710 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list