acidvsacidezWhich spelling fits?

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

Which to use

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

#44,664
“acid” frequency rank
#31,622
“acidez” frequency rank
76286
confusion score

Side-by-Side Comparison

Feature acid acidez
Definition ácido, que possui acidez; propriedade ou característica das coisas ácidas

Letter map: acid vs acidez

Shared letters muted; letters that set acid and acidez apart highlighted. Shared run: 4. acid runs 4 letters (VCVC) against acidez's 6 (VCVCVC) - the length gap alone is often enough to separate them once you know to check it.

4 ch
acid
6 ch
acidez

Role in the sentence - acid and acidez

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: acid is anadjective and acidezanoun. On the page they differ by 2 extra letter(s) - “acid” sits inside “acidez”. Our composite confusion score for this pair is 76286, derived from the frequency rank of both members and their visual similarity.

acid is recorded at frequency rank #44,664, classified as anadj. acidez is at rank #31,622, tagged as anoun, pronounced /ɐ.si.ˈdeʃ/.

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 76286, this pair ranks #2,120 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of acid vs acidez

Shared letters: acdi. Private to "acid": -. Private to "acidez": ez.

"acid" · 4 letters · shape VCVC  ·  "acidez" · 6 letters · shape VCVCVC

Known mistypes of this pair

  • acid ← accid · acdi · acidd · aicd · caid
  • acidez ← accidez · acdiez · aciddez · acidezz · acidze · aciedz · aicdez · caidez

Frequently Asked Questions

Do "acid" and "acidez" mean the same thing in a sentence?
No - they are not even the same part of speech. "acid" is an adjective and "acidez" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "acid" or "acidez"?
"acidez" is the more common of the two: it sits at frequency rank #31,622 in our Portuguese list, against #44,664 for "acid". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "acid" and "acidez".

  • Full dictionary entry for "acid" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "acidez" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #2,120 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "acid" and "acidez" also get mixed up with nearby pairs, the highest-scored neighbour is "acid 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 #2,120 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