sei vs sexi, What's the Difference?

Which to use

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

#48,072
“sei” frequency rank: #46,807
“sexi” frequency rank: 94879
confusion score

Side-by-Side Comparison

Feature	sei	sexi
Definition	Seis.	Que es físicamente atractivo y se comporta o viste de forma sexualmente sugerente.

Where the spellings diverge

Shared letters are muted; the letters that actually set sei and sexi apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.

3 ch

sei

4 ch

sexi

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: sei is /s̺ej/ while sexi is [ˈseksi]. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 94879, derived from the frequency rank of both members and their visual similarity.

sei is recorded at frequency rank #48,072, classified as anum, pronounced /s̺ej/. sexi is at rank #46,807, tagged as anadj, pronounced [ˈseksi].

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 94879, this pair ranks #688 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of sei vs sexi

Shared letters: eis. Private to "sei": -. Private to "sexi": x.

"sei" · 3 letters · shape CVV · "sexi" · 4 letters · shape CVCV

Known mistypes of this pair

sexi ← cexi · esxi · seix · sexxi · ssexi · sxei

Frequency comparison

sei#48,072

sexi#46,807

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "sei" and "sexi" be used interchangeably?

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

Which is more common, "sei" or "sexi"?

"sexi" is the more common of the two: it sits at frequency rank #46,807 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.

Remembering sei vs sexi

The fastest way to pick the right one every time.

Check the role first: if you need a num, it's “sei”; for an adjective, it's “sexi”.
See each word in full, definition, IPA, etymology and its other confusables. Full “sei” entry
Browse more pairs most likely to be confused. Most confusable