Which to use
“flaw” and “flex” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #12,978
- “flaw” frequency rank
- #10,696
- “flex” frequency rank
- 23674
- confusion score
Side-by-Side Comparison
| Feature | flaw | flex |
|---|---|---|
| Definition | A flake, fragment, or shiver. | Flexibility, pliancy. |
Where the eye mixes flaw and flex
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between flaw and flex
A purely visual mix-up. flaw (/flɔː/) and flex (/flɛks/) 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 23674, derived from the frequency rank of both members and their visual similarity.
flaw is recorded at frequency rank #12,978, classified as anoun, pronounced /flɔː/. flex is at rank #10,696, tagged as anoun, pronounced /flɛks/.
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 23674, this pair ranks #407,577 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of flaw vs flex
Shared letters: fl. Private to "flaw": aw. Private to "flex": ex.
"flaw" · 4 letters · shape CCVC · "flex" · 4 letters · shape CCVC
Known mistypes of this pair
Frequently Asked Questions
Can "flaw" and "flex" be used interchangeably?
Frequency check: "flaw" vs "flex" - which ranks higher?
Useful next steps
Eye-level mix-up between "flaw" and "flex" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "flaw" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "flex" - compare definitions side by side with the headword page. Word entry
- This pair ranks #407,577 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "flaw" and "flex" also get mixed up with nearby pairs, the highest-scored neighbour is "flail vs flaw". 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 #407,577 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.