Which to use
“who” is a pronoun and “wo” is an adverb - they look or sound alike but fill different roles in a sentence.
- #12,075
- “who” frequency rank
- #30,301
- “wo” frequency rank
- 42376
- confusion score
Side-by-Side Comparison
| Feature | who | wo |
|---|---|---|
| Definition | Quién. | Dónde. |
Where the eye mixes who and wo
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. who runs 3 letters (CCV) against wo's 2 (CV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses who with wo
These two trip readers on the page rather than in the ear: who is /huː/ while wo is [voː]. 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 (pronoun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 42376, derived from the frequency rank of both members and their visual similarity.
who is recorded at frequency rank #12,075, classified as apron, pronounced /huː/. wo is at rank #30,301, tagged as anadv, pronounced [voː].
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 42376, this pair ranks #148,570 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of who vs wo
Shared letters: ow. Private to "who": h. Private to "wo": -.
"who" · 3 letters · shape CCV · "wo" · 2 letters · shape CV
Frequently Asked Questions
Do "who" and "wo" mean the same thing in a sentence?
Which is more common, "who" or "wo"?
After this comparison
Eye-level mix-up between "who" and "wo" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "who" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "wo" - compare definitions side by side with the headword page. Word entry
- This pair ranks #148,570 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "who" and "wo" also get mixed up with nearby pairs, the highest-scored neighbour is "weón vs wo". Nearby pair
Confusion rank #148,570 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.