Which to use
“quack” and “quart” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #26,927
- “quack” frequency rank
- #28,679
- “quart” frequency rank
- 55606
- confusion score
Side-by-Side Comparison
| Feature | quack | quart |
|---|---|---|
| Definition | The sound made by a duck. | A unit of liquid capacity equal to two pints; one-fourth (quarter) of a gallon. Equivalent to 1.136 liters in the UK and 0.946 liter (liquid quart) or 1.101 liters (dry quart) in the U.S. |
Where the eye mixes quack and quart
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: quack vs quart
A purely visual mix-up. quack (/kwæk/) and quart (/kwɔːt/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 55606, derived from the frequency rank of both members and their visual similarity.
quack is recorded at frequency rank #26,927, classified as anoun, pronounced /kwæk/. quart is at rank #28,679, tagged as anoun, pronounced /kwɔːt/.
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 55606, this pair ranks #132,318 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of quack vs quart
Shared letters: aqu. Private to "quack": ck. Private to "quart": rt.
"quack" · 5 letters · shape CVVCC · "quart" · 5 letters · shape CVVCC
Known mistypes of this pair
Frequently Asked Questions
Do "quack" and "quart" mean the same thing in a sentence?
Frequency check: "quack" vs "quart" - which ranks higher?
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 "quack" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "quart" - compare definitions side by side with the headword page. Word entry
- This pair ranks #132,318 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "quack" and "quart" also get mixed up with nearby pairs, the highest-scored neighbour is "quant vs quart". 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 #132,318 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.