Which to use
“auf” is a preposition and “az” is an adverb - they look or sound alike but fill different roles in a sentence.
- #35,364
- “auf” frequency rank
- #31,221
- “az” frequency rank
- 66585
- confusion score
Side-by-Side Comparison
| Feature | auf | az |
|---|---|---|
| Definition | Arriba de, sobre, en. | Poco. |
Where the eye mixes auf and az
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between auf and az
These two trip readers on the page rather than in the ear: auf is [aʊ̯f] while az is [ɑz]. 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 (preposition vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 66585, derived from the frequency rank of both members and their visual similarity.
auf is recorded at frequency rank #35,364, classified as aprep, pronounced [aʊ̯f]. az is at rank #31,221, tagged as anadv, pronounced [ɑz].
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 66585, this pair ranks #39,485 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of auf vs az
Shared letters: a. Private to "auf": fu. Private to "az": z.
"auf" · 3 letters · shape VVC · "az" · 2 letters · shape VC
Frequently Asked Questions
Is swapping "auf" for "az" ever safe?
In ordinary Spanish text, does "auf" or "az" show up more?
What to do next
Eye-level mix-up between "auf" and "az" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "auf" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "az" - compare definitions side by side with the headword page. Word entry
- This pair ranks #39,485 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "auf" and "az" also get mixed up with nearby pairs, the highest-scored neighbour is "atl vs auf". Nearby pair
Confusion rank #39,485 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.