asm vs au, What's the Difference?

Which to use

“asm” is an adjective and “au” is an article - they look or sound alike but fill different roles in a sentence.

#17,876
“asm” frequency rank: #24
“au” frequency rank: 17900
confusion score

Side-by-Side Comparison

Feature	asm	au
Definition	Asthmatique.	Contraction de la préposition à et de l'article défini le.

Where the eye mixes asm and au

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

3 ch

asm

2 ch

Visual trap between asm and au

These two trip readers on the page rather than in the ear: asm is \as\ while au 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 (adjective vs article), which is usually the fastest check. Our composite confusion score for this pair is 17900, derived from the frequency rank of both members and their visual similarity.

asm is recorded at frequency rank #17,876, classified as anadj, pronounced \as\. au is at rank #24, tagged as anarticle, 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 17900, this pair ranks #380,921 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of asm vs au

Shared letters: a. Private to "asm": ms. Private to "au": u.

"asm" · 3 letters · shape VCC · "au" · 2 letters · shape VV

Frequently Asked Questions

Can "asm" and "au" be used interchangeably?

No - they are not even the same part of speech. "asm" is an adjective and "au" an article, so a sentence built for one is usually ungrammatical with the other.

In ordinary French text, does "asm" or "au" show up more?

"au" is the more common of the two: it sits at frequency rank #24 in our French list, against #17,876 for "asm". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Eye-level mix-up between "asm" and "au" is sorted above. Next: full entries or other pairs that share a letter shape.

Full dictionary entry for "asm" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "au" - compare definitions side by side with the headword page. Word entry
This pair ranks #380,921 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
"asm" and "au" also get mixed up with nearby pairs, the highest-scored neighbour is "asm vs aur". Nearby pair

Confusion rank #380,921 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.