Which to use
“sem” is a preposition and “sou” is a verb - they look or sound alike but fill different roles in a sentence.
- #69
- “sem” frequency rank
- #106
- “sou” frequency rank
- 175
- confusion score
Side-by-Side Comparison
| Feature | sem | sou |
|---|---|---|
| Definition | indicativa de carência ou ausência | primeira pessoa do singular do presente do indicativo do verbo ser |
Where the eye mixes sem and sou
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Look-alike desk: sem vs sou
These two trip readers on the page rather than in the ear: sem is /sɐ̃j̃/ while sou is /ˈsow/, /ˈso/. 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 (preposition vs verb), which is usually the fastest check. Our composite confusion score for this pair is 175, derived from the frequency rank of both members and their visual similarity.
sem is recorded at frequency rank #69, classified as aprep, pronounced /sɐ̃j̃/. sou is at rank #106, tagged as averb, pronounced /ˈsow/, /ˈso/.
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 175, this pair ranks #75,463 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sem vs sou
Shared letters: s. Private to "sem": em. Private to "sou": ou.
"sem" · 3 letters · shape CVC · "sou" · 3 letters · shape CVV
Frequently Asked Questions
Can "sem" and "sou" be used interchangeably?
Which is more common, "sem" or "sou"?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "sem" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sou" - compare definitions side by side with the headword page. Word entry
- This pair ranks #75,463 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "sem" and "sou" also get mixed up with nearby pairs, the highest-scored neighbour is "soap vs sou". Nearby pair
Confusion rank #75,463 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.