sirenavssirenasWhat's the difference?

Which to use

“sirena” and “sirenas” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#14,712
“sirena” frequency rank
#17,820
“sirenas” frequency rank
32532
confusion score

Side-by-Side Comparison

Feature sirena sirenas
Definition Ser fabuloso, parte mujer y parte ave, que atraía a los marineros a la perdición con su canto. Forma del plural de sirena.

Where the eye mixes sirena and sirenas

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

6 ch
sirena
7 ch
sirenas

Why the eye confuses sirena with sirenas

A purely visual mix-up. sirena ([siˈɾena]) and sirenas ([siˈɾenas]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 extra letter(s) - “sirena” sits inside “sirenas”. Our composite confusion score for this pair is 32532, derived from the frequency rank of both members and their visual similarity.

sirena is recorded at frequency rank #14,712, classified as anoun, pronounced [siˈɾena]. sirenas is at rank #17,820, tagged as anoun, pronounced [siˈɾenas].

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 32532, this pair ranks #201,487 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sirena vs sirenas

Shared letters: aeinrs. Private to "sirena": -. Private to "sirenas": -.

"sirena" · 6 letters · shape CVCVCV  ·  "sirenas" · 7 letters · shape CVCVCVC

Known mistypes of this pair

  • sirena ← cirena · isrena · sierna · sirean · sirenna · sirnea · sirrena · sriena
  • sirenas ← cirenas · isrenas · siernas · sireans · sirenass · sirennas · sirensa · sirneas

Frequently Asked Questions

Can "sirena" and "sirenas" be used interchangeably?
No. They are said differently ([siˈɾena] versus [siˈɾenas]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "sirena" vs "sirenas" - which ranks higher?
"sirena" is the more common of the two: it sits at frequency rank #14,712 in our Spanish list, against #17,820 for "sirenas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "sirena" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sirenas" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #201,487 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "sirena" and "sirenas" also get mixed up with nearby pairs, the highest-scored neighbour is "sirenas vs sirias". 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 #201,487 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