ácido vs ado, What's the Difference?

Which to use

“ácido” is an adjective and “ado” is a noun - they look or sound alike but fill different roles in a sentence.

#4,441
“ácido” frequency rank: #31,628
“ado” frequency rank: 36069
confusion score

Side-by-Side Comparison

Feature	ácido	ado
Definition	que possui um sabor azedo, picante, acre, como o do vinagre	a fazer

Letter map: ácido vs ado

Shared letters muted; letters that set ácido and ado apart highlighted. Shared run: 2. ácido runs 5 letters (VCVCV) against ado's 3 (VCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch

ácido

3 ch

ado

Part-of-speech tell for ácido / ado

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ácido is anadjective and adoanoun. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 36069, derived from the frequency rank of both members and their visual similarity.

ácido is recorded at frequency rank #4,441, classified as anadj, pronounced /ˈa.si.du/. ado is at rank #31,628, 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 36069, this pair ranks #30,825 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ácido vs ado

Shared letters: do. Private to "ácido": ciá. Private to "ado": a.

"ácido" · 5 letters · shape VCVCV · "ado" · 3 letters · shape VCV

Frequently Asked Questions

Do "ácido" and "ado" mean the same thing in a sentence?

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

In ordinary Portuguese text, does "ácido" or "ado" show up more?

"ácido" is the more common of the two: it sits at frequency rank #4,441 in our Portuguese list, against #31,628 for "ado". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "ácido" vs "ado" is on the table, pick a follow-up below.

Full dictionary entry for "ácido" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "ado" - compare definitions side by side with the headword page. Word entry
This pair ranks #30,825 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
"ácido" and "ado" also get mixed up with nearby pairs, the highest-scored neighbour is "acs vs ado". Nearby pair

Confusion rank #30,825 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.