certovscleroWhich spelling fits?

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

Which to use

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

#326
“certo” frequency rank
#16,470
“clero” frequency rank
16796
confusion score

Side-by-Side Comparison

Feature certo clero
Definition verdadeiro, evidente classe ou ordem religiosa

Where the eye mixes certo and clero

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch
certo
5 ch
clero

Look-alike desk: certo vs clero

These two trip readers on the page rather than in the ear: certo is /ˈsɛɹ.tʊ/ while clero is /ˈklɛ.ɾu/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 3 positions, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 16796, derived from the frequency rank of both members and their visual similarity.

certo is recorded at frequency rank #326, classified as anadj, pronounced /ˈsɛɹ.tʊ/. clero is at rank #16,470, tagged as anoun, pronounced /ˈklɛ.ɾu/.

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 16796, this pair ranks #54,649 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of certo vs clero

Shared letters: ceor. Private to "certo": t. Private to "clero": l.

"certo" · 5 letters · shape CVCCV  ·  "clero" · 5 letters · shape CCVCV

Known mistypes of this pair

  • certoccerto · cerot · cerrto · certto · cetro · creto · ecrto
  • clerocclero · celro · cleor · clerro · cllero · clreo · lcero

Frequently Asked Questions

Is swapping "certo" for "clero" ever safe?
No - they are not even the same part of speech. "certo" is an adjective and "clero" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "certo" vs "clero" - which ranks higher?
"certo" is the more common of the two: it sits at frequency rank #326 in our Portuguese list, against #16,470 for "clero". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "certo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "clero" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #54,649 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "certo" and "clero" also get mixed up with nearby pairs, the highest-scored neighbour is "clero vs cobro". 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 #54,649 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