Seguí vs sei, What's the Difference?

Which to use

“Seguí” is a name and “sei” is a num - they look or sound alike but fill different roles in a sentence.

#6,826
“Seguí” frequency rank: #48,072
“sei” frequency rank: 54898
confusion score

Side-by-Side Comparison

Feature	Seguí	sei
Definition	Apellido.	Seis.

Where the eye mixes Seguí and sei

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. Seguí runs 5 letters (CVCVV) against sei's 3 (CVV) - the length gap alone is often enough to separate them once you know to check it.

5 ch

Seguí

3 ch

sei

Visual trap between Seguí and sei

These two trip readers on the page rather than in the ear: Seguí is [seˈɣ̞i] while sei is /s̺ej/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 letter(s) in length, and the parts of speech differ too (name vs num), which is usually the fastest check. Our composite confusion score for this pair is 54898, derived from the frequency rank of both members and their visual similarity.

Seguí is recorded at frequency rank #6,826, classified as aname, pronounced [seˈɣ̞i]. sei is at rank #48,072, tagged as anum, pronounced /s̺ej/.

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 54898, this pair ranks #81,303 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of Seguí vs sei

Shared letters: es. Private to "Seguí": guí. Private to "sei": i.

"Seguí" · 5 letters · shape CVCVV · "sei" · 3 letters · shape CVV

Frequently Asked Questions

Is swapping "Seguí" for "sei" ever safe?

No - they are not even the same part of speech. "Seguí" is a name and "sei" a num, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "Seguí" vs "sei" - which ranks higher?

"Seguí" is the more common of the two: it sits at frequency rank #6,826 in our Spanish list, against #48,072 for "sei". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

Full dictionary entry for "Seguí" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "sei" - compare definitions side by side with the headword page. Word entry
This pair ranks #81,303 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
"Seguí" and "sei" also get mixed up with nearby pairs, the highest-scored neighbour is "sei vs stem". Nearby pair

Confusion rank #81,303 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.