acidezvsácidoWhat's the difference?

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

Which to use

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

#31,622
“acidez” frequency rank
#4,441
“ácido” frequency rank
36063
confusion score

Side-by-Side Comparison

Feature acidez ácido
Definition propriedade ou característica das coisas ácidas que possui um sabor azedo, picante, acre, como o do vinagre

Where the eye mixes acidez and ácido

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. acidez runs 6 letters (VCVCVC) against ácido's 5 (VCVCV) - the length gap alone is often enough to separate them once you know to check it.

6 ch
acidez
5 ch
ácido

Visual trap between acidez and ácido

These two trip readers on the page rather than in the ear: acidez is /ɐ.si.ˈdeʃ/ while ácido is /ˈa.si.du/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 36063, derived from the frequency rank of both members and their visual similarity.

acidez is recorded at frequency rank #31,622, classified as anoun, pronounced /ɐ.si.ˈdeʃ/. ácido is at rank #4,441, tagged as anadj, pronounced /ˈa.si.du/.

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 36063, this pair ranks #30,835 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of acidez vs ácido

Shared letters: cdi. Private to "acidez": aez. Private to "ácido": oá.

"acidez" · 6 letters · shape VCVCVC  ·  "ácido" · 5 letters · shape VCVCV

Known mistypes of this pair

  • acidez ← accidez · acdiez · aciddez · acidezz · acidze · aciedz · aicdez · caidez

Frequently Asked Questions

Is swapping "acidez" for "ácido" ever safe?
No - they are not even the same part of speech. "acidez" is a noun and "ácido" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "acidez" vs "ácido" - which ranks higher?
"ácido" is the more common of the two: it sits at frequency rank #4,441 in our Portuguese list, against #31,622 for "acidez". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Eye-level mix-up between "acidez" and "ácido" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "acidez" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ácido" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #30,835 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "acidez" and "ácido" also get mixed up with nearby pairs, the highest-scored neighbour is "acid vs acidez". 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 #30,835 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