sustituirvssustituyeTell them apart

Which to use

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

#8,883
“sustituir” frequency rank
#15,970
“sustituye” frequency rank
24853
confusion score

Side-by-Side Comparison

Feature sustituir sustituye
Definition Poner una cosa o persona en lugar de otra. Tercera persona del singular (él, ella, ello; usted, 2.ª persona) del presente de indicativo de sustituir.

Where the eye mixes sustituir and sustituye

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. sustituir (CVCCVCVVC) and sustituye (CVCCVCVVV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

9 ch
sustituir
9 ch
sustituye

Look-alike desk: sustituir vs sustituye

A purely visual mix-up. sustituir ([sust̪iˈt̪wiɾ]) and sustituye ([sust̪iˈt̪uʝe]) 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 24853, derived from the frequency rank of both members and their visual similarity.

sustituir is recorded at frequency rank #8,883, classified as averb, pronounced [sust̪iˈt̪wiɾ]. sustituye is at rank #15,970, tagged as averb, pronounced [sust̪iˈt̪uʝe].

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 24853, this pair ranks #239,202 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sustituir vs sustituye

Shared letters: istu. Private to "sustituir": r. Private to "sustituye": ey.

"sustituir" · 9 letters · shape CVCCVCVVC  ·  "sustituye" · 9 letters · shape CVCCVCVVV

Known mistypes of this pair

  • sustituir ← ssustituir · ssutituir · susittuir · susstituir · sustitiur · sustittuir · sustituirr · sustituri
  • sustituye ← ssustituye · ssutituye · susittuye · susstituye · sustittuye · sustituey · sustituyye · sustityue

Frequently Asked Questions

Is swapping "sustituir" for "sustituye" ever safe?
No. They are said differently ([sust̪iˈt̪wiɾ] versus [sust̪iˈt̪uʝe]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "sustituir" or "sustituye"?
"sustituir" is the more common of the two: it sits at frequency rank #8,883 in our Spanish list, against #15,970 for "sustituye". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "sustituir" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sustituye" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #239,202 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "sustituir" and "sustituye" also get mixed up with nearby pairs, the highest-scored neighbour is "sustituta vs sustituye". 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 #239,202 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