Which to use
“Asu” is a name and “aux” is a contraction - they look or sound alike but fill different roles in a sentence.
- #46,344
- “Asu” frequency rank
- #32,511
- “aux” frequency rank
- 78855
- confusion score
Side-by-Side Comparison
| Feature | Asu | aux |
|---|---|---|
| Definition | Apellido. | Contracción de la preposición à y el artículo les; a las ; a los. |
Where the eye mixes Asu and aux
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Why the eye confuses Asu with aux
These two trip readers on the page rather than in the ear: Asu is [ˈasu] while aux is /o/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (name vs contraction), which is usually the fastest check. Our composite confusion score for this pair is 78855, derived from the frequency rank of both members and their visual similarity.
Asu is recorded at frequency rank #46,344, classified as aname, pronounced [ˈasu]. aux is at rank #32,511, tagged as acontraction, pronounced /o/.
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 78855, this pair ranks #13,843 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of Asu vs aux
Shared letters: au. Private to "Asu": s. Private to "aux": x.
"Asu" · 3 letters · shape VCV · "aux" · 3 letters · shape VVC
Frequently Asked Questions
Is swapping "Asu" for "aux" ever safe?
Which is more common, "Asu" or "aux"?
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 "Asu" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "aux" - compare definitions side by side with the headword page. Word entry
- This pair ranks #13,843 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "Asu" and "aux" also get mixed up with nearby pairs, the highest-scored neighbour is "Asu vs atl". Nearby pair
Confusion rank #13,843 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.