Which to use
“loony” is an adjective and “loos” is a noun - they look or sound alike but fill different roles in a sentence.
- #38,025
- “loony” frequency rank
- #37,546
- “loos” frequency rank
- 75571
- confusion score
Side-by-Side Comparison
| Feature | loony | loos |
|---|---|---|
| Definition | Insane. | plural of loo |
Where the eye mixes loony and loos
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. loony runs 5 letters (CVVCV) against loos's 4 (CVVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses loony with loos
These two trip readers on the page rather than in the ear: loony is /ˈluːni/ while loos is /luːz/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 75571, derived from the frequency rank of both members and their visual similarity.
loony is recorded at frequency rank #38,025, classified as anadj, pronounced /ˈluːni/. loos is at rank #37,546, tagged as anoun, pronounced /luːz/.
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 75571, this pair ranks #32,716 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of loony vs loos
Shared letters: lo. Private to "loony": ny. Private to "loos": s.
"loony" · 5 letters · shape CVVCV · "loos" · 4 letters · shape CVVC
Known mistypes of this pair
Frequently Asked Questions
Do "loony" and "loos" mean the same thing in a sentence?
Which is more common, "loony" or "loos"?
After this comparison
Eye-level mix-up between "loony" and "loos" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "loony" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "loos" - compare definitions side by side with the headword page. Word entry
- This pair ranks #32,716 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "loony" and "loos" also get mixed up with nearby pairs, the highest-scored neighbour is "loos vs lope". 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 #32,716 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.