ciernevscierroWhich spelling fits?

Quick tell: cierne is a noun, cierro is a verb, so they fill different roles in a sentence.

Which to use

“cierne” is a noun and “cierro” is a verb - they look or sound alike but fill different roles in a sentence.

#44,632
“cierne” frequency rank
#17,070
“cierro” frequency rank
61702
confusion score

Side-by-Side Comparison

Feature cierne cierro
Definition Acción de cerner, estar fecundándose la flor de olivo, vid, trigo y otras. Primera persona del singular (yo) del presente de indicativo de cerrar o de cerrarse.

Where the eye mixes cierne and cierro

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. cierne and cierro follow the identical consonant-vowel pattern (CVVCCV). Same shape at a glance is often the real trap, independent of shared letters.

6 ch
cierne
6 ch
cierro

Why the eye confuses cierne with cierro

These two trip readers on the page rather than in the ear: cierne is [ˈsjeɾne] while cierro is [ˈsjero]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 61702, derived from the frequency rank of both members and their visual similarity.

cierne is recorded at frequency rank #44,632, classified as anoun, pronounced [ˈsjeɾne]. cierro is at rank #17,070, tagged as averb, pronounced [ˈsjero].

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 61702, this pair ranks #54,525 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of cierne vs cierro

Shared letters: ceir. Private to "cierne": n. Private to "cierro": o.

"cierne" · 6 letters · shape CVVCCV  ·  "cierro" · 6 letters · shape CVVCCV

Known mistypes of this pair

  • cierne ← ccierne · ceirne · cienre · ciernne · cirene · icerne · sierne
  • cierro ← ccierro · ceirro · ciero · cieror · cirero · icerro · sierro

Frequently Asked Questions

Can "cierne" and "cierro" be used interchangeably?
No - they are not even the same part of speech. "cierne" is a noun and "cierro" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "cierne" or "cierro" show up more?
"cierro" is the more common of the two: it sits at frequency rank #17,070 in our Spanish list, against #44,632 for "cierne". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "cierne" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "cierro" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #54,525 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "cierne" and "cierro" also get mixed up with nearby pairs, the highest-scored neighbour is "cierne vs cierva". 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 #54,525 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