Which to use
“sep” is a num and “sí” is an adverb - they look or sound alike but fill different roles in a sentence.
- #8,588
- “sep” frequency rank
- #146
- “sí” frequency rank
- 8734
- confusion score
Side-by-Side Comparison
| Feature | sep | sí |
|---|---|---|
| Definition | Siete. | Palabra usada para expresar afirmación. |
Where the eye mixes sep and sí
Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.
Visual trap between sep and sí
These two trip readers on the page rather than in the ear: sep is /sep/ 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 (num vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 8734, derived from the frequency rank of both members and their visual similarity.
sep is recorded at frequency rank #8,588, classified as anum, pronounced /sep/. 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 8734, this pair ranks #304,122 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of sep vs sí
Shared letters: s. Private to "sep": ep. Private to "sí": í.
"sep" · 3 letters · shape CVC · "sí" · 2 letters · shape CV
Frequently Asked Questions
Is swapping "sep" for "sí" ever safe?
Frequency check: "sep" vs "sí" - which ranks higher?
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 "sep" 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 #304,122 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "sep" and "sí" also get mixed up with nearby pairs, the highest-scored neighbour is "sep vs stem". Nearby pair
Confusion rank #304,122 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.