Which to use
“flask” and “flasks” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #22,379
- “flask” frequency rank
- #44,207
- “flasks” frequency rank
- 66586
- confusion score
Side-by-Side Comparison
| Feature | flask | flasks |
|---|---|---|
| Definition | 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. | plural of flask |
Where the eye mixes flask and flasks
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Spelling & Dictionary Insight
A purely visual mix-up. flask (/ˈflɑːsk/) and flasks (/flɑːsks/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “flask” sits inside “flasks”. Our composite confusion score for this pair is 66586, derived from the frequency rank of both members and their visual similarity.
flask is recorded at frequency rank #22,379, classified as anoun, pronounced /ˈflɑːsk/. flasks is at rank #44,207, tagged as anoun, pronounced /flɑːsks/.
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 66586, this pair ranks #67,306 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of flask vs flasks
Shared letters: afkls. Private to "flask": -. Private to "flasks": -.
"flask" · 5 letters · shape CCVCC · "flasks" · 6 letters · shape CCVCCC
Known mistypes of this pair
Frequently Asked Questions
Can "flask" and "flasks" be used interchangeably?
Which is more common, "flask" or "flasks"?
What to do next
You've compared "flask" and "flasks". Here's where to go from here.
- Full dictionary entry for "flask" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "flasks" - compare definitions side by side with the headword page. Word entry
- This pair ranks #67,306 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "flask" and "flasks" also get mixed up with nearby pairs, the highest-scored neighbour is "flaky vs flasks". 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
PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.