semvssuaWhich spelling fits?

Quick tell: sem is a preposition, sua is an adjective, so they fill different roles in a sentence.

Which to use

“sem” is a preposition and “sua” is an adjective - they look or sound alike but fill different roles in a sentence.

#69
“sem” frequency rank
#32
“sua” frequency rank
101
confusion score

Side-by-Side Comparison

Feature sem sua
Definition indicativa de carência ou ausência que tem você como objeto

Letter map: sem vs sua

Shared letters muted; letters that set sem and sua apart highlighted. Shared run: 1.

3 ch
sem
3 ch
sua

Part-of-speech tell for sem / sua

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sem is apreposition and suaanadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 101, derived from the frequency rank of both members and their visual similarity.

sem is recorded at frequency rank #69, classified as aprep, pronounced /sɐ̃j̃/. sua is at rank #32, 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 101, this pair ranks #75,555 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sem vs sua

Shared letters: s. Private to "sem": em. Private to "sua": au.

"sem" · 3 letters · shape CVC  ·  "sua" · 3 letters · shape CVV

Frequently Asked Questions

Can "sem" and "sua" be used interchangeably?
No - they are not even the same part of speech. "sem" is a preposition and "sua" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "sem" or "sua" show up more?
"sua" is the more common of the two: it sits at frequency rank #32 in our Portuguese list, against #69 for "sem". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "sem" and "sua". Here's where to go from here.

  • Full dictionary entry for "sem" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sua" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #75,555 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sem" and "sua" also get mixed up with nearby pairs, the highest-scored neighbour is "soap vs sua". Nearby pair

Confusion rank #75,555 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