Which to use
“sis” is a num and “stu” is an unknown - they look or sound alike but fill different roles in a sentence.
- #37,202
- “sis” frequency rank
- #47,032
- “stu” frequency rank
- 84234
- confusion score
Side-by-Side Comparison
| Feature | sis | stu |
|---|---|---|
| Definition | sechs (6) | Dativ Singular des Numerales sto |
Where the spellings diverge
Shared letters are muted; the letters that actually set sis and stu apart are highlighted. They share 1 letter 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: sis is [sis] while stu is [stʊ]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (num vs unknown), which is usually the fastest check. Our composite confusion score for this pair is 84234, derived from the frequency rank of both members and their visual similarity.
sis is recorded at frequency rank #37,202, classified as anum, pronounced [sis]. stu is at rank #47,032, tagged as anunknown, pronounced [stʊ].
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 84234, this pair ranks #126,943 of 2,006,359 scored German confusable pairs - among the most confusable pairs.
Orthographic DNA of sis vs stu
Shared letters: s. Private to "sis": i. Private to "stu": tu.
"sis" · 3 letters · shape CVC · "stu" · 3 letters · shape CCV
Frequency comparison
Frequently Asked Questions
Can "sis" and "stu" be used interchangeably?
Which is more common, "sis" or "stu"?
Remembering sis vs stu
The fastest way to pick the right one every time.
- Check the role first: if you need a num, it's “sis”; for an unknown, it's “stu”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “sis” entry
- Browse more pairs most likely to be confused. Most confusable