lucidezvslúcidoTell them apart

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

Which to use

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

#31,859
“lucidez” frequency rank
#28,267
“lúcido” frequency rank
60126
confusion score

Side-by-Side Comparison

Feature lucidez lúcido
Definition qualidade de lúcido que luz; resplandecente; fulgente

Where the eye mixes lucidez and lúcido

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. lucidez runs 7 letters (CVCVCVC) against lúcido's 6 (CVCVCV) - the length gap alone is often enough to separate them once you know to check it.

7 ch
lucidez
6 ch
lúcido

Visual trap between lucidez and lúcido

These two trip readers on the page rather than in the ear: lucidez is /lu.si.ˈdeʃ/ while lúcido is /ˈlu.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 60126, derived from the frequency rank of both members and their visual similarity.

lucidez is recorded at frequency rank #31,859, classified as anoun, pronounced /lu.si.ˈdeʃ/. lúcido is at rank #28,267, tagged as anadj, pronounced /ˈlu.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 60126, this pair ranks #7,830 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of lucidez vs lúcido

Shared letters: cdil. Private to "lucidez": euz. Private to "lúcido": oú.

"lucidez" · 7 letters · shape CVCVCVC  ·  "lúcido" · 6 letters · shape CVCVCV

Known mistypes of this pair

  • lucidez ← lcuidez · llucidez · luccidez · lucdiez · luciddez · lucidezz · lucidze · luciedz

Frequently Asked Questions

Can "lucidez" and "lúcido" be used interchangeably?
No - they are not even the same part of speech. "lucidez" is a noun and "lúcido" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "lucidez" vs "lúcido" - which ranks higher?
"lúcido" is the more common of the two: it sits at frequency rank #28,267 in our Portuguese list, against #31,859 for "lucidez". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "lucidez" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "lúcido" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #7,830 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "lucidez" and "lúcido" also get mixed up with nearby pairs, the highest-scored neighbour is "lúcido vs ludo". 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 #7,830 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