Which to use
“ach” is an intj and “acid” is an adjective - they look or sound alike but fill different roles in a sentence.
- #48,212
- “ach” frequency rank
- #44,664
- “acid” frequency rank
- 92876
- confusion score
Side-by-Side Comparison
| Feature | ach | acid |
|---|---|---|
| Definition | oh | ácido, que possui acidez; |
Letter map: ach vs acid
Shared letters muted; letters that set ach and acid apart highlighted. Shared run: 2. ach runs 3 letters (VCC) against acid's 4 (VCVC) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: ach vs acid
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ach is anintj and acidanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 92876, derived from the frequency rank of both members and their visual similarity.
ach is recorded at frequency rank #48,212, classified as anintj. acid is at rank #44,664, tagged as anadj.
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 92876, this pair ranks #149 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.
Orthographic DNA of ach vs acid
Shared letters: ac. Private to "ach": h. Private to "acid": di.
"ach" · 3 letters · shape VCC · "acid" · 4 letters · shape VCVC
Known mistypes of this pair
- acid ← accid · acdi · acidd · aicd · caid
Frequently Asked Questions
Do "ach" and "acid" mean the same thing in a sentence?
In ordinary Portuguese text, does "ach" or "acid" show up more?
What to do next
Done with this confusable. These links stay specific to "ach" and "acid".
- Full dictionary entry for "ach" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "acid" - compare definitions side by side with the headword page. Word entry
- This pair ranks #149 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ach" and "acid" also get mixed up with nearby pairs, the highest-scored neighbour is "ach vs acs". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #149 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.