Which to use
“flaps” and “flask” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #22,378
- “flaps” frequency rank
- #22,379
- “flask” frequency rank
- 44757
- confusion score
Side-by-Side Comparison
| Feature | flaps | flask |
|---|---|---|
| Definition | A disease in the mouths of horses involving inflammation in the cheeks or lips. | A narrow-necked vessel of metal or glass, used for various purposes; as of sheet metal, to carry gunpowder in; or of wrought iron, to contain quicksilver; or of glass, to heat water in, etc. |
Where the eye mixes flaps and flask
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses flaps with flask
A purely visual mix-up. flaps (/flæps/) and flask (/ˈflɑːsk/) 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 44757, derived from the frequency rank of both members and their visual similarity.
flaps is recorded at frequency rank #22,378, classified as anoun, pronounced /flæps/. flask is at rank #22,379, tagged as anoun, pronounced /ˈflɑːsk/.
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 44757, this pair ranks #227,633 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of flaps vs flask
Shared letters: afls. Private to "flaps": p. Private to "flask": k.
"flaps" · 5 letters · shape CCVCC · "flask" · 5 letters · shape CCVCC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "flaps" for "flask" ever safe?
In ordinary English text, does "flaps" or "flask" show up more?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "flaps" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "flask" - compare definitions side by side with the headword page. Word entry
- This pair ranks #227,633 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "flaps" and "flask" also get mixed up with nearby pairs, the highest-scored neighbour is "flail vs flask". 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 #227,633 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.