ilesovsilusãoTell them apart

Quick tell: ileso is a adjective, ilusão is a noun, so they fill different roles in a sentence.

Which to use

“ileso” is an adjective and “ilusão” is a noun - they look or sound alike but fill different roles in a sentence.

#25,340
“ileso” frequency rank
#5,857
“ilusão” frequency rank
31197
confusion score

Side-by-Side Comparison

Feature ileso ilusão
Definition que não é ou não está leso; que ficou incólume qualquer coisa que pareça ser algo que não é

Letter map: ileso vs ilusão

Shared letters muted; letters that set ileso and ilusão apart highlighted. Shared run: 4. ileso runs 5 letters (VCVCV) against ilusão's 6 (VCVCVV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
ileso
6 ch
ilusão

Role in the sentence - ileso and ilusão

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ileso is anadjective and ilusãoanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 31197, derived from the frequency rank of both members and their visual similarity.

ileso is recorded at frequency rank #25,340, classified as anadj. ilusão is at rank #5,857, tagged as anoun, pronounced /i.luˈzɐ̃w̃/.

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 31197, this pair ranks #36,967 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ileso vs ilusão

Shared letters: ilos. Private to "ileso": e. Private to "ilusão": uã.

"ileso" · 5 letters · shape VCVCV  ·  "ilusão" · 6 letters · shape VCVCVV

Known mistypes of this pair

  • ileso ← ielso · ileos · ilesso · illeso · ilseo · lieso

Frequently Asked Questions

Can "ileso" and "ilusão" be used interchangeably?
No - they are not even the same part of speech. "ileso" is an adjective and "ilusão" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "ileso" or "ilusão" show up more?
"ilusão" is the more common of the two: it sits at frequency rank #5,857 in our Portuguese list, against #25,340 for "ileso". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Done with this confusable. These links stay specific to "ileso" and "ilusão".

  • Full dictionary entry for "ileso" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ilusão" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #36,967 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "ileso" and "ilusão" also get mixed up with nearby pairs, the highest-scored neighbour is "ileso vs ils". 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 #36,967 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list