agh vs AU, What's the Difference?

Which to use

“agh” is an intj and “AU” is a noun - they look or sound alike but fill different roles in a sentence.

#44,044
“agh” frequency rank: #6,867
“AU” frequency rank: 50911
confusion score

Side-by-Side Comparison

Feature	agh	AU
Definition	An exclamation of mild horror, disgust or frustration	Initialism of alopecia universalis.

Letter map: agh vs AU

Shared letters muted; letters that set agh and AU apart highlighted. Shared run: 1.

3 ch

agh

2 ch

Grammar separator: agh vs AU

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: agh is anintj and AUanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 50911, derived from the frequency rank of both members and their visual similarity.

agh is recorded at frequency rank #44,044, classified as anintj, pronounced [æː(x)]. AU is at rank #6,867, tagged as anoun.

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 50911, this pair ranks #170,059 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of agh vs AU

Shared letters: a. Private to "agh": gh. Private to "AU": u.

"agh" · 3 letters · shape VCC · "AU" · 2 letters · shape VV

Frequently Asked Questions

Can "agh" and "AU" be used interchangeably?

No - they are not even the same part of speech. "agh" is an intj and "AU" a noun, so a sentence built for one is usually ungrammatical with the other.

In ordinary English text, does "agh" or "AU" show up more?

"AU" is the more common of the two: it sits at frequency rank #6,867 in our English list, against #44,044 for "agh". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "agh" and "AU".

Full dictionary entry for "agh" 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 #170,059 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"agh" and "AU" also get mixed up with nearby pairs, the highest-scored neighbour is "agh vs amb". Nearby pair

Confusion rank #170,059 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.