Which to use
“loch” and “lough” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #16,064
- “loch” frequency rank
- #35,390
- “lough” frequency rank
- 51454
- confusion score
Side-by-Side Comparison
| Feature | loch | lough |
|---|---|---|
| Definition | A lake. | A lake or long, narrow inlet, especially in Ireland. |
Where the eye mixes loch and lough
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. loch runs 4 letters (CVCC) against lough's 5 (CVVCC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses loch with lough
A purely visual mix-up. loch (/lɔx/) and lough (/lɑx/) 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 51454, derived from the frequency rank of both members and their visual similarity.
loch is recorded at frequency rank #16,064, classified as anoun, pronounced /lɔx/. lough is at rank #35,390, tagged as anoun, pronounced /lɑx/.
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 51454, this pair ranks #165,349 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of loch vs lough
Shared letters: hlo. Private to "loch": c. Private to "lough": gu.
"loch" · 4 letters · shape CVCC · "lough" · 5 letters · shape CVVCC
Known mistypes of this pair
Frequently Asked Questions
Do "loch" and "lough" mean the same thing in a sentence?
Which is more common, "loch" or "lough"?
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 "loch" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "lough" - compare definitions side by side with the headword page. Word entry
- This pair ranks #165,349 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "loch" and "lough" also get mixed up with nearby pairs, the highest-scored neighbour is "lough vs Lugo". 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 #165,349 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.