ácidovsaliadoWhich spelling fits?

Quick tell: ácido is a adjective, aliado is a noun, so they fill different roles in a sentence.

Which to use

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

#4,441
“ácido” frequency rank
#5,163
“aliado” frequency rank
9604
confusion score

Side-by-Side Comparison

Feature ácido aliado
Definition que possui um sabor azedo, picante, acre, como o do vinagre entidade (pessoa, time, estado, etc) que se aliou a outra entidade

Letter map: ácido vs aliado

Shared letters muted; letters that set ácido and aliado apart highlighted. Shared run: 3.

5 ch
ácido
6 ch
aliado

Part-of-speech tell for ácido / aliado

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ácido is anadjective and aliadoanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 9604, 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/. aliado is at rank #5,163, 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 9604, this pair ranks #63,769 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ácido vs aliado

Shared letters: dio. Private to "ácido": . Private to "aliado": al.

"ácido" · 5 letters · shape VCVCV  ·  "aliado" · 6 letters · shape VCVVCV

Known mistypes of this pair

  • aliadoailado · alaido · aliaddo · aliaod · alidao · alliado · laiado

Frequently Asked Questions

Is swapping "ácido" for "aliado" ever safe?
No - they are not even the same part of speech. "ácido" is an adjective and "aliado" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "ácido" vs "aliado" - which ranks higher?
"ácido" is the more common of the two: it sits at frequency rank #4,441 in our Portuguese list, against #5,163 for "aliado". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "ácido" and "aliado". Here's where to go from here.

  • Full dictionary entry for "ácido" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "aliado" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #63,769 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ácido" and "aliado" also get mixed up with nearby pairs, the highest-scored neighbour is "aleijado vs aliado". 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 #63,769 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list