nacimosvsnocivosWhich spelling fits?

Quick tell: nacimos is a verb, nocivos is an adjective, so they fill different roles in a sentence.

Which to use

“nacimos” is a verb and “nocivos” is an adjective - they look or sound alike but fill different roles in a sentence.

#27,695
“nacimos” frequency rank
#27,324
“nocivos” frequency rank
55019
confusion score

Side-by-Side Comparison

Feature nacimos nocivos
Definition Primera persona del plural (nosotros, nosotras) del pretérito perfecto simple de indicativo de nacer. Forma del plural de nocivo.

Where the eye mixes nacimos and nocivos

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

7 ch
nacimos
7 ch
nocivos

Visual trap between nacimos and nocivos

These two trip readers on the page rather than in the ear: nacimos is [naˈsimos] while nocivos is [noˈsiβ̞os]. 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 (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 55019, derived from the frequency rank of both members and their visual similarity.

nacimos is recorded at frequency rank #27,695, classified as averb, pronounced [naˈsimos]. 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 55019, this pair ranks #80,766 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of nacimos vs nocivos

Shared letters: cinos. Private to "nacimos": am. Private to "nocivos": v.

"nacimos" · 7 letters · shape CVCVCVC  ·  "nocivos" · 7 letters · shape CVCVCVC

Known mistypes of this pair

  • nacimosancimos · naccimos · nacimmos · nacimoss · nacimso · nacioms · nacmios · naicmos
  • nocivosncoivos · nnocivos · noccivos · nocibos · nociovs · nocivoss · nocivso · nocivvos

Frequently Asked Questions

Can "nacimos" and "nocivos" be used interchangeably?
No - they are not even the same part of speech. "nacimos" is a verb and "nocivos" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "nacimos" or "nocivos" show up more?
"nocivos" is the more common of the two: it sits at frequency rank #27,324 in our Spanish list, against #27,695 for "nacimos". 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 "nacimos" 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 #80,766 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "nacimos" and "nocivos" also get mixed up with nearby pairs, the highest-scored neighbour is "nacimos vs nacos". 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 #80,766 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