terciovstercosWhich spelling fits?

Which to use

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

#6,241
“tercio” frequency rank
#48,727
“tercos” frequency rank
54968
confusion score

Side-by-Side Comparison

Feature tercio tercos
Definition Que es una de las tres partes iguales en que se divide algo. Forma del plural de terco.

Where the eye mixes tercio and tercos

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. tercio (CVCCVV) and tercos (CVCCVC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

6 ch
tercio
6 ch
tercos

Look-alike desk: tercio vs tercos

A purely visual mix-up. tercio ([ˈt̪eɾsjo]) and tercos ([ˈt̪eɾkos]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 54968, derived from the frequency rank of both members and their visual similarity.

tercio is recorded at frequency rank #6,241, classified as anadj, pronounced [ˈt̪eɾsjo]. tercos is at rank #48,727, tagged as anadj, pronounced [ˈt̪eɾkos].

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 54968, this pair ranks #80,989 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of tercio vs tercos

Shared letters: ceort. Private to "tercio": i. Private to "tercos": s.

"tercio" · 6 letters · shape CVCCVV  ·  "tercos" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • tercio ← etrcio · tecrio · terccio · tercoi · terico · terrcio · tersio · trecio
  • tercos ← etrcos · tecros · terccos · tercoss · tercso · terocs · terrcos · trecos

Frequently Asked Questions

Can "tercio" and "tercos" be used interchangeably?
No. They are said differently ([ˈt̪eɾsjo] versus [ˈt̪eɾkos]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "tercio" or "tercos"?
"tercio" is the more common of the two: it sits at frequency rank #6,241 in our Spanish list, against #48,727 for "tercos". 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 "tercio" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tercos" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #80,989 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "tercio" and "tercos" also get mixed up with nearby pairs, the highest-scored neighbour is "tercos vs termos". 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 #80,989 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