saivsskyWhat's the difference?

Quick tell: sai is a intj, sky is a noun, so they fill different roles in a sentence.

Which to use

“sai” is an intj and “sky” is a noun - they look or sound alike but fill different roles in a sentence.

#998
“sai” frequency rank
#7,084
“sky” frequency rank
8082
confusion score

Side-by-Side Comparison

Feature sai sky
Definition expressão que comunica que se deseja que se afaste, que deixe em paz céu

Letter map: sai vs sky

Shared letters muted; letters that set sai and sky apart highlighted. Shared run: 1.

3 ch
sai
3 ch
sky

Grammar separator: sai vs sky

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sai is anintj and skyanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 8082, derived from the frequency rank of both members and their visual similarity.

sai is recorded at frequency rank #998, classified as anintj. sky is at rank #7,084, tagged as anoun, pronounced /skaɪ/.

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 8082, this pair ranks #65,820 of 75,631 scored Portuguese confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sai vs sky

Shared letters: s. Private to "sai": ai. Private to "sky": ky.

"sai" · 3 letters · shape CVV  ·  "sky" · 3 letters · shape CCV

Frequently Asked Questions

Do "sai" and "sky" mean the same thing in a sentence?
No - they are not even the same part of speech. "sai" is an intj and "sky" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Portuguese text, does "sai" or "sky" show up more?
"sai" is the more common of the two: it sits at frequency rank #998 in our Portuguese list, against #7,084 for "sky". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pair "sai" vs "sky" is on the table, pick a follow-up below.

  • Full dictionary entry for "sai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sky" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #65,820 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sai" and "sky" also get mixed up with nearby pairs, the highest-scored neighbour is "Sau vs sky". Nearby pair

Confusion rank #65,820 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