seasvsseinTell them apart

Which to use

“seas” and “sein” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#2,050
“seas” frequency rank
#45,601
“sein” frequency rank
47651
confusion score

Side-by-Side Comparison

Feature seas sein
Definition Segunda persona del singular (tú) del presente de subjuntivo de ser. Ser, estar.

Where the eye mixes seas and sein

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. seas and sein follow the identical consonant-vowel pattern (CVVC). Same shape at a glance is often the real trap, independent of shared letters.

4 ch
seas
4 ch
sein

Look-alike desk: seas vs sein

A purely visual mix-up. seas ([ˈseas]) and sein ([ˈzaɪ̯n]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 47651, derived from the frequency rank of both members and their visual similarity.

seas is recorded at frequency rank #2,050, classified as averb, pronounced [ˈseas]. sein is at rank #45,601, tagged as averb, pronounced [ˈzaɪ̯n].

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 47651, this pair ranks #118,854 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of seas vs sein

Shared letters: es. Private to "seas": a. Private to "sein": in.

"seas" · 4 letters · shape CVVC  ·  "sein" · 4 letters · shape CVVC

Known mistypes of this pair

  • seas ← ceas · saes · seass · sesa · sseas
  • sein ← esin · seinn · seni · ssein

Frequently Asked Questions

Do "seas" and "sein" mean the same thing in a sentence?
No. They are said differently ([ˈseas] versus [ˈzaɪ̯n]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "seas" or "sein"?
"seas" is the more common of the two: it sits at frequency rank #2,050 in our Spanish list, against #45,601 for "sein". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Eye-level mix-up between "seas" and "sein" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "seas" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sein" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #118,854 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "seas" and "sein" also get mixed up with nearby pairs, the highest-scored neighbour is "sei vs sein". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #118,854 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list