Which to use
“lu” and “luck” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #12,273
- “lu” frequency rank
- #1,312
- “luck” frequency rank
- 13585
- confusion score
Side-by-Side Comparison
| Feature | lu | luck |
|---|---|---|
| Definition | Archaic form of loo (“card game”). | Something that happens to someone by chance, a chance occurrence. |
Where the eye mixes lu and luck
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Look-alike desk: lu vs luck
A purely visual mix-up. lu (/luː/) and luck (/lʌk/) 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 2 extra letter(s) - “lu” sits inside “luck”. Our composite confusion score for this pair is 13585, derived from the frequency rank of both members and their visual similarity.
lu is recorded at frequency rank #12,273, classified as anoun, pronounced /luː/. luck is at rank #1,312, tagged as anoun, pronounced /lʌk/.
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 13585, this pair ranks #474,927 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of lu vs luck
Shared letters: lu. Private to "lu": -. Private to "luck": ck.
"lu" · 2 letters · shape CV · "luck" · 4 letters · shape CVCC
Known mistypes of this pair
- luck ← lcuk · lluck · lucck · luckk · lukc · ulck
Frequently Asked Questions
Is swapping "lu" for "luck" ever safe?
In ordinary English text, does "lu" or "luck" show up more?
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 "lu" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "luck" - compare definitions side by side with the headword page. Word entry
- This pair ranks #474,927 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "lu" and "luck" also get mixed up with nearby pairs, the highest-scored neighbour is "LSC vs lu". 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 #474,927 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.