vssosWhat's the difference?

Quick tell: is a adverb, sos is a verb, so they fill different roles in a sentence.

Which to use

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

#146
“sí” frequency rank
#1,331
“sos” frequency rank
1477
confusion score

Side-by-Side Comparison

Feature sos
Definition Palabra usada para expresar afirmación. Segunda persona del singular (vos) del presente de indicativo de ser.

Where the eye mixes sí and sos

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

2 ch
sí
3 ch
sos

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: is [ˈsi] while sos is [ˈsos]. 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 (adverb vs verb), which is usually the fastest check. Our composite confusion score for this pair is 1477, derived from the frequency rank of both members and their visual similarity.

is recorded at frequency rank #146, classified as anadv, pronounced [ˈsi]. sos is at rank #1,331, tagged as averb, pronounced [ˈsos].

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 1477, this pair ranks #321,996 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sí vs sos

Shared letters: s. Private to "sí": í. Private to "sos": o.

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

Frequently Asked Questions

Can "sí" and "sos" be used interchangeably?
No - they are not even the same part of speech. "sí" is an adverb and "sos" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sí" or "sos"?
"sí" is the more common of the two: it sits at frequency rank #146 in our Spanish list, against #1,331 for "sos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list