nocivovsnocivosWhich spelling fits?

Which to use

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

#29,315
“nocivo” frequency rank
#27,324
“nocivos” frequency rank
56639
confusion score

Side-by-Side Comparison

Feature nocivo nocivos
Definition Que hace daño o perjudica. Forma del plural de nocivo.

Where the eye mixes nocivo and nocivos

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

6 ch
nocivo
7 ch
nocivos

Visual trap between nocivo and nocivos

A purely visual mix-up. nocivo ([noˈsiβ̞o]) and nocivos ([noˈsiβ̞os]) 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) - “nocivo” sits inside “nocivos”. Our composite confusion score for this pair is 56639, derived from the frequency rank of both members and their visual similarity.

nocivo is recorded at frequency rank #29,315, classified as anadj, pronounced [noˈsiβ̞o]. nocivos is at rank #27,324, tagged as anadj, pronounced [noˈsiβ̞os].

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 56639, this pair ranks #73,752 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of nocivo vs nocivos

Shared letters: cinov. Private to "nocivo": -. Private to "nocivos": s.

"nocivo" · 6 letters · shape CVCVCV  ·  "nocivos" · 7 letters · shape CVCVCVC

Known mistypes of this pair

  • nocivo ← ncoivo · nnocivo · noccivo · nocibo · nociov · nocivvo · nocvio · noicvo
  • nocivos ← ncoivos · nnocivos · noccivos · nocibos · nociovs · nocivoss · nocivso · nocivvos

Frequently Asked Questions

Can "nocivo" and "nocivos" be used interchangeably?
No. They are said differently ([noˈsiβ̞o] versus [noˈsiβ̞os]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "nocivo" or "nocivos"?
"nocivos" is the more common of the two: it sits at frequency rank #27,324 in our Spanish list, against #29,315 for "nocivo". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "nocivo" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "nocivos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #73,752 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "nocivo" and "nocivos" also get mixed up with nearby pairs, the highest-scored neighbour is "nociva vs nocivo". 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 #73,752 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