Which to use
“aqua” is a noun and “aux” is a contraction - they look or sound alike but fill different roles in a sentence.
- #34,441
- “aqua” frequency rank
- #32,511
- “aux” frequency rank
- 66952
- confusion score
Side-by-Side Comparison
| Feature | aqua | aux |
|---|---|---|
| Definition | Agua. | Contracción de la preposición à y el artículo les; a las ; a los. |
Where the eye mixes aqua and aux
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.
Visual trap between aqua and aux
These two trip readers on the page rather than in the ear: aqua is /ˈa.kʷa/ while aux is /o/. 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 (noun vs contraction), which is usually the fastest check. Our composite confusion score for this pair is 66952, derived from the frequency rank of both members and their visual similarity.
aqua is recorded at frequency rank #34,441, classified as anoun, pronounced /ˈa.kʷa/. 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 66952, this pair ranks #38,419 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of aqua vs aux
Shared letters: au. Private to "aqua": q. Private to "aux": x.
"aqua" · 4 letters · shape VCVV · "aux" · 3 letters · shape VVC
Known mistypes of this pair
- aqua ← aqau · aqqua · auqa · qaua
Frequently Asked Questions
Do "aqua" and "aux" mean the same thing in a sentence?
Which is more common, "aqua" or "aux"?
Useful next steps
Eye-level mix-up between "aqua" and "aux" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "aqua" 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 #38,419 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "aqua" and "aux" also get mixed up with nearby pairs, the highest-scored neighbour is "aqua vs aqueja". 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 #38,419 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.