ach vs ah, What's the Difference?

Which to use

“ach” and “ah” are a confusable Portuguese pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#48,212
“ach” frequency rank: #640
“ah” frequency rank: 48852
confusion score

Side-by-Side Comparison

Feature	ach	ah
Definition	oh	exprime admiração

Letter map: ach vs ah

Shared letters muted; letters that set ach and ah apart highlighted. Shared run: 2.

3 ch

ach

2 ch

Pair insight - ach / ah

ach and ah are indexed as a confusable Portuguese pair. We have no recorded pronunciation or part of speech for both members, so the spelling overlap is what we can show you: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 48852, derived from the frequency rank of both members and their visual similarity.

ach is recorded at frequency rank #48,212, classified as anintj. ah is at rank #640, tagged as anintj.

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 48852, this pair ranks #16,281 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of ach vs ah

Shared letters: ah. Private to "ach": c. Private to "ah": -.

"ach" · 3 letters · shape VCC · "ah" · 2 letters · shape VC

Frequently Asked Questions

Is swapping "ach" for "ah" ever safe?

No. They differ by 1 letter(s) in length, but the dictionary glosses above give them different meanings, so swapping one for the other changes what the sentence says.

Frequency check: "ach" vs "ah" - which ranks higher?

"ah" is the more common of the two: it sits at frequency rank #640 in our Portuguese list, against #48,212 for "ach". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Done with this confusable. These links stay specific to "ach" and "ah".

Full dictionary entry for "ach" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "ah" - compare definitions side by side with the headword page. Word entry
This pair ranks #16,281 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"ach" and "ah" also get mixed up with nearby pairs, the highest-scored neighbour is "ach vs acs". Nearby pair

Confusion rank #16,281 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.