seu vs sua, What's the Difference?

Which to use

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

#35,751
“seu” frequency rank: #44,466
“sua” frequency rank: 80217
confusion score

Side-by-Side Comparison

Feature	seu	sua
Definition	Su.	Forma del nominativo femenino singular de suus.

Where the spellings diverge

Shared letters are muted; the letters that actually set seu and sua apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch

seu

3 ch

sua

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: seu is [ˈsew] while sua is /ˈsʷa/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs pronoun), which is usually the fastest check. Our composite confusion score for this pair is 80217, derived from the frequency rank of both members and their visual similarity.

seu is recorded at frequency rank #35,751, classified as anadj, pronounced [ˈsew]. sua is at rank #44,466, tagged as apron, pronounced /ˈsʷa/.

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 80217, this pair ranks #11,981 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of seu vs sua

Shared letters: su. Private to "seu": e. Private to "sua": a.

"seu" · 3 letters · shape CVV · "sua" · 3 letters · shape CVV

Frequency comparison

seu#35,751

sua#44,466

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "seu" and "sua" be used interchangeably?

No - they are not even the same part of speech. "seu" is an adjective and "sua" a pronoun, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "seu" or "sua"?

"seu" is the more common of the two: it sits at frequency rank #35,751 in our Spanish list, against #44,466 for "sua". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering seu vs sua

The fastest way to pick the right one every time.

Check the role first: if you need an adjective, it's “seu”; for a pronoun, it's “sua”.
See each word in full, definition, IPA, etymology and its other confusables. Full “seu” entry
Browse more pairs most likely to be confused. Most confusable