Which to use
“sein” is a verb and “sine” is a preposition - they look or sound alike but fill different roles in a sentence.
- #45,601
- “sein” frequency rank
- #39,994
- “sine” frequency rank
- 85595
- confusion score
Side-by-Side Comparison
| Feature | sein | sine |
|---|---|---|
| Definition | Ser, estar. | Sin. |
Where the spellings diverge
Shared letters are muted; the letters that actually set sein and sine apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: sein is [ˈzaɪ̯n] while sine is [ˈsɪ.nɛ]. Spoken aloud the problem disappears. In writing it persists, because they are an anagram pair: the same letters reordered, and the parts of speech differ too (verb vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 85595, derived from the frequency rank of both members and their visual similarity.
sein is recorded at frequency rank #45,601, classified as averb, pronounced [ˈzaɪ̯n]. sine is at rank #39,994, tagged as aprep, pronounced [ˈsɪ.nɛ].
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 85595, this pair ranks #5,990 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of sein vs sine
Shared letters: eins. Private to "sein": -. Private to "sine": -.
"sein" · 4 letters · shape CVVC · "sine" · 4 letters · shape CVCV
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "sein" and "sine" be used interchangeably?
Which is more common, "sein" or "sine"?
Remembering sein vs sine
The fastest way to pick the right one every time.
- Check the role first: if you need a verb, it's “sein”; for a preposition, it's “sine”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “sein” entry
- Browse more pairs most likely to be confused. Most confusable