mistériovsmisteriosoWhich spelling fits?

Quick tell: mistério is a noun, misterioso is an adjective, so they fill different roles in a sentence.

Which to use

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

#3,920
“mistério” frequency rank
#7,802
“misterioso” frequency rank
11722
confusion score

Side-by-Side Comparison

Feature mistério misterioso
Definition conjunto de doutrinas restritas aos iniciados cheio de mistério; caracterizado por mistério; envolvido em mistério

Letter map: mistério vs misterioso

Shared letters muted; letters that set mistério and misterioso apart highlighted. Shared run: 7. mistério runs 8 letters (CVCCVCVV) against misterioso's 10 (CVCCVCVVCV) - the length gap alone is often enough to separate them once you know to check it.

8 ch
mistério
10 ch
misterioso

Part-of-speech tell for mistério / misterioso

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: mistério is anoun and misteriosoanadjective. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 11722, derived from the frequency rank of both members and their visual similarity.

mistério is recorded at frequency rank #3,920, classified as anoun, pronounced /miʃ.ˈtɛ.ɾju/. misterioso is at rank #7,802, tagged as anadj.

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 11722, this pair ranks #61,079 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of mistério vs misterioso

Shared letters: imorst. Private to "mistério": é. Private to "misterioso": e.

"mistério" · 8 letters · shape CVCCVCVV  ·  "misterioso" · 10 letters · shape CVCCVCVVCV

Known mistypes of this pair

  • misterioso ← imsterioso · misetrioso · missterioso · misteiroso · misterioos · misteriosso · misterisoo · misteroiso

Frequently Asked Questions

Do "mistério" and "misterioso" mean the same thing in a sentence?
No - they are not even the same part of speech. "mistério" is a noun and "misterioso" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "mistério" or "misterioso"?
"mistério" is the more common of the two: it sits at frequency rank #3,920 in our Portuguese list, against #7,802 for "misterioso". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "mistério" and "misterioso". Here's where to go from here.

  • Full dictionary entry for "mistério" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "misterioso" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #61,079 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "mistério" and "misterioso" also get mixed up with nearby pairs, the highest-scored neighbour is "magistério vs mistério". 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 #61,079 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