ciertovscleroWhich spelling fits?

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

Which to use

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

#352
“cierto” frequency rank
#12,779
“clero” frequency rank
13131
confusion score

Side-by-Side Comparison

Feature cierto clero
Definition Que se sabe real, verdadero, que no ofrece dudas. Conjunto de los clérigos, así de órdenes mayores como menores, incluso los de la primera tonsura.

Where the eye mixes cierto and clero

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. cierto runs 6 letters (CVVCCV) against clero's 5 (CCVCV) - the length gap alone is often enough to separate them once you know to check it.

6 ch
cierto
5 ch
clero

Visual trap between cierto and clero

These two trip readers on the page rather than in the ear: cierto is [ˈsjeɾt̪o] while clero is [ˈkleɾo]. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 13131, derived from the frequency rank of both members and their visual similarity.

cierto is recorded at frequency rank #352, classified as anadj, pronounced [ˈsjeɾt̪o]. clero is at rank #12,779, tagged as anoun, pronounced [ˈkleɾo].

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 13131, this pair ranks #289,023 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of cierto vs clero

Shared letters: ceor. Private to "cierto": it. Private to "clero": l.

"cierto" · 6 letters · shape CVVCCV  ·  "clero" · 5 letters · shape CCVCV

Known mistypes of this pair

  • ciertoccierto · ceirto · cierot · cierrto · ciertto · cietro · cireto · icerto
  • clerocclero · celro · cleor · clerro · cllero · clreo · lcero

Frequently Asked Questions

Do "cierto" and "clero" mean the same thing in a sentence?
No - they are not even the same part of speech. "cierto" is an adjective and "clero" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "cierto" vs "clero" - which ranks higher?
"cierto" is the more common of the two: it sits at frequency rank #352 in our Spanish list, against #12,779 for "clero". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

  • Full dictionary entry for "cierto" 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 #289,023 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "cierto" and "clero" also get mixed up with nearby pairs, the highest-scored neighbour is "Charo vs clero". 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 #289,023 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list