Which to use
“fluke” and “flux” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #24,159
- “fluke” frequency rank
- #13,518
- “flux” frequency rank
- 37677
- confusion score
Side-by-Side Comparison
| Feature | fluke | flux |
|---|---|---|
| Definition | A lucky or improbable occurrence that could probably never be repeated. | The act of flowing; a continuous moving on or passing by, as of a flowing stream. |
Where the eye mixes fluke and flux
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between fluke and flux
A purely visual mix-up. fluke (/fluːk/) and flux (/flʌks/) 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 letter(s) in length. Our composite confusion score for this pair is 37677, derived from the frequency rank of both members and their visual similarity.
fluke is recorded at frequency rank #24,159, classified as anoun, pronounced /fluːk/. flux is at rank #13,518, tagged as anoun, pronounced /flʌks/.
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 37677, this pair ranks #292,514 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of fluke vs flux
Shared letters: flu. Private to "fluke": ek. Private to "flux": x.
"fluke" · 5 letters · shape CCVCV · "flux" · 4 letters · shape CCVC
Known mistypes of this pair
Frequently Asked Questions
Can "fluke" and "flux" be used interchangeably?
Which is more common, "fluke" or "flux"?
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 "fluke" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "flux" - compare definitions side by side with the headword page. Word entry
- This pair ranks #292,514 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "fluke" and "flux" also get mixed up with nearby pairs, the highest-scored neighbour is "flaked vs fluke". 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 #292,514 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.