sueñovssujoWhich spelling fits?

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

Which to use

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

#49,711
“sueño” frequency rank
#4,959
“sujo” frequency rank
54670
confusion score

Side-by-Side Comparison

Feature sueño sujo
Definition sono: qualidade do que não está limpo

Letter map: sueño vs sujo

Shared letters muted; letters that set sueño and sujo apart highlighted. Shared run: 3. sueño runs 5 letters (CVVCV) against sujo's 4 (CVCV) - the length gap alone is often enough to separate them once you know to check it.

5 ch
sueño
4 ch
sujo

Grammar separator: sueño vs sujo

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sueño is anoun and sujoanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 54670, derived from the frequency rank of both members and their visual similarity.

sueño is recorded at frequency rank #49,711, classified as anoun, pronounced /ˈswe.ɲo/. sujo is at rank #4,959, 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 54670, this pair ranks #11,107 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of sueño vs sujo

Shared letters: osu. Private to "sueño": eñ. Private to "sujo": j.

"sueño" · 5 letters · shape CVVCV  ·  "sujo" · 4 letters · shape CVCV

Known mistypes of this pair

  • sujo ← sjuo · ssujo · sujjo · suoj · usjo

Frequently Asked Questions

Can "sueño" and "sujo" be used interchangeably?
No - they are not even the same part of speech. "sueño" is a noun and "sujo" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sueño" or "sujo"?
"sujo" is the more common of the two: it sits at frequency rank #4,959 in our Portuguese list, against #49,711 for "sueño". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pair "sueño" vs "sujo" is on the table, pick a follow-up below.

  • Full dictionary entry for "sueño" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sujo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #11,107 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sueño" and "sujo" also get mixed up with nearby pairs, the highest-scored neighbour is "seno vs sueño". 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 #11,107 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