Which to use
“loco” is an adjective and “loo” is a verb - they look or sound alike but fill different roles in a sentence.
- #972
- “loco” frequency rank
- #43,690
- “loo” frequency rank
- 44662
- confusion score
Side-by-Side Comparison
| Feature | loco | loo |
|---|---|---|
| Definition | Que no está en su sano juicio, que se comporta de forma irracional. | Primera persona del singular (yo) del presente de indicativo de loar. |
Where the eye mixes loco and loo
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Visual trap between loco and loo
These two trip readers on the page rather than in the ear: loco is [ˈloko] while loo is [ˈloo]. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 44662, derived from the frequency rank of both members and their visual similarity.
loco is recorded at frequency rank #972, classified as anadj, pronounced [ˈloko]. loo is at rank #43,690, tagged as averb, pronounced [ˈloo].
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 44662, this pair ranks #135,817 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of loco vs loo
Shared letters: lo. Private to "loco": c. Private to "loo": -.
"loco" · 4 letters · shape CVCV · "loo" · 3 letters · shape CVV
Known mistypes of this pair
- loco ← lcoo · lloco · locco · looc · olco
Frequently Asked Questions
Is swapping "loco" for "loo" ever safe?
Which is more common, "loco" or "loo"?
What to do next
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "loco" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "loo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #135,817 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "loco" and "loo" also get mixed up with nearby pairs, the highest-scored neighbour is "loo vs lotto". 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 #135,817 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.