SauvsshiWhat's the difference?

Quick tell: Sau is a noun, shi is an adverb, so they fill different roles in a sentence.

Which to use

“Sau” is a noun and “shi” is an adverb - they look or sound alike but fill different roles in a sentence.

#49,171
“Sau” frequency rank
#25,143
“shi” frequency rank
74314
confusion score

Side-by-Side Comparison

Feature Sau shi
Definition porco exatamente; precisamente

Where the eye mixes Sau and shi

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. Sau (CVV) and shi (CCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
Sau
3 ch
shi

Look-alike desk: Sau vs shi

These two trip readers on the page rather than in the ear: Sau is /zaʊ̯/ while shi is /ˈʃiː/. 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 (noun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 74314, derived from the frequency rank of both members and their visual similarity.

Sau is recorded at frequency rank #49,171, classified as anoun, pronounced /zaʊ̯/. shi is at rank #25,143, tagged as anadv, pronounced /ˈʃiː/.

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 74314, this pair ranks #2,555 of 75,631 scored Portuguese confusable pairs - among the most confusable pairs.

Orthographic DNA of Sau vs shi

Shared letters: s. Private to "Sau": au. Private to "shi": hi.

"Sau" · 3 letters · shape CVV  ·  "shi" · 3 letters · shape CCV

Frequently Asked Questions

Is swapping "Sau" for "shi" ever safe?
No - they are not even the same part of speech. "Sau" is a noun and "shi" an adverb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "Sau" vs "shi" - which ranks higher?
"shi" is the more common of the two: it sits at frequency rank #25,143 in our Portuguese list, against #49,171 for "Sau". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "Sau" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "shi" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #2,555 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "Sau" and "shi" also get mixed up with nearby pairs, the highest-scored neighbour is "Sau vs soap". Nearby pair

Confusion rank #2,555 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