AUX vs of, What's the Difference?

Which to use

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

#18,814
“AUX” frequency rank: #324
“of” frequency rank: 19138
confusion score

Side-by-Side Comparison

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

Letter map: AUX vs of

Shared letters muted; letters that set AUX and of apart highlighted. No shared letter run.

3 ch

AUX

2 ch

Part-of-speech tell for AUX / of

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: AUX is anabbrev and ofapreposition. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 19138, derived from the frequency rank of both members and their visual similarity.

AUX is recorded at frequency rank #18,814, classified as anabbrev, pronounced […]. of is at rank #324, tagged as aprep, 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 19138, this pair ranks #1,911,472 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of AUX vs of

Shared letters: none. Private to "AUX": aux. Private to "of": fo.

"AUX" · 3 letters · shape VVC · "of" · 2 letters · shape VC

Frequently Asked Questions

Do "AUX" and "of" mean the same thing in a sentence?

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

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

"of" is the more common of the two: it sits at frequency rank #324 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

You've compared "AUX" and "of". Here's where to go from here.

Full dictionary entry for "AUX" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "of" - compare definitions side by side with the headword page. Word entry
This pair ranks #1,911,472 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
"AUX" and "of" also get mixed up with nearby pairs, the highest-scored neighbour is "AUX vs puzzles". Nearby pair

Confusion rank #1,911,472 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.