saivsspinWhich spelling fits?

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

Which to use

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

#998
“sai” frequency rank
#19,560
“spin” frequency rank
20558
confusion score

Side-by-Side Comparison

Feature sai spin
Definition expressão que comunica que se deseja que se afaste, que deixe em paz aranha

Letter map: sai vs spin

Shared letters muted; letters that set sai and spin apart highlighted. Shared run: 2.

3 ch
sai
4 ch
spin

Grammar separator: sai vs spin

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: sai is anintj and spinanoun. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 20558, derived from the frequency rank of both members and their visual similarity.

sai is recorded at frequency rank #998, classified as anintj. spin is at rank #19,560, tagged as anoun, pronounced /spɪn/ ouvir^(fonte ?).

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 20558, this pair ranks #49,920 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sai vs spin

Shared letters: is. Private to "sai": a. Private to "spin": np.

"sai" · 3 letters · shape CVV  ·  "spin" · 4 letters · shape CCVC

Known mistypes of this pair

  • spinpsin · sipn · spinn · spni · sppin · sspin

Frequently Asked Questions

Do "sai" and "spin" mean the same thing in a sentence?
No - they are not even the same part of speech. "sai" is an intj and "spin" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sai" or "spin"?
"sai" is the more common of the two: it sits at frequency rank #998 in our Portuguese list, against #19,560 for "spin". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Done with this confusable. These links stay specific to "sai" and "spin".

  • Full dictionary entry for "sai" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "spin" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #49,920 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "sai" and "spin" also get mixed up with nearby pairs, the highest-scored neighbour is "slip vs spin". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #49,920 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