abavsaufWhich spelling fits?

Quick tell: aba is a noun, auf is a preposition, so they fill different roles in a sentence.

Which to use

“aba” is a noun and “auf” is a preposition - they look or sound alike but fill different roles in a sentence.

#48,886
“aba” frequency rank
#25,894
“auf” frequency rank
74780
confusion score

Side-by-Side Comparison

Feature aba auf
Definition Manteau de laine en usage en Turquie et dans l’ancienne Perse. Sur, avec notion d'immobilité.

Where the eye mixes aba and auf

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
aba
3 ch
auf

Look-alike desk: aba vs auf

These two trip readers on the page rather than in the ear: aba is \a.ba\ while auf is \aʊ̯f\. 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 (noun vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 74780, derived from the frequency rank of both members and their visual similarity.

aba is recorded at frequency rank #48,886, classified as anoun, pronounced \a.ba\. auf is at rank #25,894, tagged as aprep, pronounced \aʊ̯f\.

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 74780, this pair ranks #36,044 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of aba vs auf

Shared letters: a. Private to "aba": b. Private to "auf": fu.

"aba" · 3 letters · shape VCV  ·  "auf" · 3 letters · shape VVC

Frequently Asked Questions

Can "aba" and "auf" be used interchangeably?
No - they are not even the same part of speech. "aba" is a noun and "auf" a preposition, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "aba" vs "auf" - which ranks higher?
"auf" is the more common of the two: it sits at frequency rank #25,894 in our French list, against #48,886 for "aba". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "aba" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "auf" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #36,044 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "aba" and "auf" also get mixed up with nearby pairs, the highest-scored neighbour is "aba vs aur". Nearby pair

Confusion rank #36,044 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list