aus vs AUX, What's the Difference?

Which to use

“aus” is a preposition and “AUX” is an abbrev - they look or sound alike but fill different roles in a sentence.

#32
“aus” frequency rank: #18,814
“AUX” frequency rank: 18846
confusion score

Side-by-Side Comparison

Feature	aus	AUX
Definition	von drinnen nach draußen	Kürzel für einen zusätzlichen Eingang zur freien Verwendung (bei Geräten wie zum Beispiel Verstärkern)

Letter map: aus vs AUX

Shared letters muted; letters that set aus and AUX apart highlighted. Shared run: 2.

3 ch

aus

3 ch

AUX

Role in the sentence - aus and AUX

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: aus is apreposition and AUXanabbrev. On the page they differ by a single letter - s in “aus” becomes x in “AUX”. Our composite confusion score for this pair is 18846, derived from the frequency rank of both members and their visual similarity.

aus is recorded at frequency rank #32, classified as aprep, pronounced [aʊ̯s]. AUX is at rank #18,814, tagged as anabbrev, pronounced […].

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 18846, this pair ranks #1,914,333 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of aus vs AUX

Shared letters: au. Private to "aus": s. Private to "AUX": x.

"aus" · 3 letters · shape VVC · "AUX" · 3 letters · shape VVC

Frequently Asked Questions

Can "aus" and "AUX" be used interchangeably?

No - they are not even the same part of speech. "aus" is a preposition and "AUX" an abbrev, so a sentence built for one is usually ungrammatical with the other.

In ordinary German text, does "aus" or "AUX" show up more?

"aus" is the more common of the two: it sits at frequency rank #32 in our German list, against #18,814 for "AUX". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pair "aus" vs "AUX" is on the table, pick a follow-up below.

Full dictionary entry for "aus" 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 #1,914,333 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
"aus" and "AUX" also get mixed up with nearby pairs, the highest-scored neighbour is "AUX vs puzzles". Nearby pair

Confusion rank #1,914,333 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.