Which to use
“lux” and “lye” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #18,878
- “lux” frequency rank
- #40,787
- “lye” frequency rank
- 59665
- confusion score
Side-by-Side Comparison
| Feature | lux | lye |
|---|---|---|
| Definition | In the International System of Units, the derived unit of illuminance or illumination; one lumen per square metre. Symbol: lx | An alkaline liquid made by leaching ashes (usually wood ashes). |
Where the eye mixes lux and lye
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: lux vs lye
A purely visual mix-up. lux (/lʌks/) and lye (/laɪ/) 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 59665, derived from the frequency rank of both members and their visual similarity.
lux is recorded at frequency rank #18,878, classified as anoun, pronounced /lʌks/. lye is at rank #40,787, tagged as anoun, pronounced /laɪ/.
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 59665, this pair ranks #104,801 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of lux vs lye
Shared letters: l. Private to "lux": ux. Private to "lye": ey.
"lux" · 3 letters · shape CVC · "lye" · 3 letters · shape CVV
Frequently Asked Questions
Do "lux" and "lye" mean the same thing in a sentence?
Frequency check: "lux" vs "lye" - which ranks higher?
Useful next steps
Eye-level mix-up between "lux" and "lye" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "lux" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "lye" - compare definitions side by side with the headword page. Word entry
- This pair ranks #104,801 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "lux" and "lye" also get mixed up with nearby pairs, the highest-scored neighbour is "LSC vs lye". Nearby pair
Confusion rank #104,801 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.