sas vs sí, What's the Difference?

Which to use

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

#20,511
“sas” frequency rank: #146
“sí” frequency rank: 20657
confusion score

Side-by-Side Comparison

Feature	sas	sí
Definition	Cedazo	Palabra usada para expresar afirmación.

Where the eye mixes sas and sí

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch

sas

2 ch

sí

Visual trap between sas and sí

These two trip readers on the page rather than in the ear: sas is /ˈsas/ while sí is [ˈsi]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 20657, derived from the frequency rank of both members and their visual similarity.

sas is recorded at frequency rank #20,511, classified as anoun, pronounced /ˈsas/. sí is at rank #146, tagged as anadv, pronounced [ˈsi].

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 20657, this pair ranks #258,379 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sas vs sí

Shared letters: s. Private to "sas": a. Private to "sí": í.

"sas" · 3 letters · shape CVC · "sí" · 2 letters · shape CV

Frequently Asked Questions

Is swapping "sas" for "sí" ever safe?

No - they are not even the same part of speech. "sas" is a noun and "sí" an adverb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "sas" or "sí"?

"sí" is the more common of the two: it sits at frequency rank #146 in our Spanish list, against #20,511 for "sas". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

Full dictionary entry for "sas" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "sí" - compare definitions side by side with the headword page. Word entry
This pair ranks #258,379 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
"sas" and "sí" also get mixed up with nearby pairs, the highest-scored neighbour is "sas vs sous". Nearby pair

Confusion rank #258,379 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.