Which to use
“flex” is a noun and “flexed” is an adjective - they look or sound alike but fill different roles in a sentence.
- #10,696
- “flex” frequency rank
- #38,840
- “flexed” frequency rank
- 49536
- confusion score
Side-by-Side Comparison
| Feature | flex | flexed |
|---|---|---|
| Definition | Flexibility, pliancy. | Bent. |
Where the eye mixes flex and flexed
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Why the eye confuses flex with flexed
These two trip readers on the page rather than in the ear: flex is /flɛks/ while flexed is /flɛkst/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “flex” sits inside “flexed”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 49536, derived from the frequency rank of both members and their visual similarity.
flex is recorded at frequency rank #10,696, classified as anoun, pronounced /flɛks/. flexed is at rank #38,840, tagged as anadj, pronounced /flɛkst/.
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 49536, this pair ranks #182,669 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of flex vs flexed
Shared letters: eflx. Private to "flex": -. Private to "flexed": d.
"flex" · 4 letters · shape CCVC · "flexed" · 6 letters · shape CCVCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "flex" for "flexed" ever safe?
Frequency check: "flex" vs "flexed" - which ranks higher?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "flex" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "flexed" - compare definitions side by side with the headword page. Word entry
- This pair ranks #182,669 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "flex" and "flexed" also get mixed up with nearby pairs, the highest-scored neighbour is "flaked vs flexed". 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 #182,669 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.