sesvsstuWhat's the difference?

Quick tell: ses is a abbrev, stu is an unknown, so they fill different roles in a sentence.

Which to use

“ses” is an abbrev and “stu” is an unknown - they look or sound alike but fill different roles in a sentence.

#26,610
“ses” frequency rank
#47,032
“stu” frequency rank
73642
confusion score

Side-by-Side Comparison

Feature ses stu
Definition Kontraktion von jsi + se Dativ Singular des Numerales sto

Where the eye mixes ses and stu

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence. ses (CVC) and stu (CCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

3 ch
ses
3 ch
stu

Why the eye confuses ses with stu

These two trip readers on the page rather than in the ear: ses is [sɛs] 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 (abbrev vs unknown), which is usually the fastest check. Our composite confusion score for this pair is 73642, derived from the frequency rank of both members and their visual similarity.

ses is recorded at frequency rank #26,610, classified as anabbrev, pronounced [sɛs]. 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 73642, this pair ranks #354,782 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of ses vs stu

Shared letters: s. Private to "ses": e. Private to "stu": tu.

"ses" · 3 letters · shape CVC  ·  "stu" · 3 letters · shape CCV

Frequently Asked Questions

Can "ses" and "stu" be used interchangeably?
No - they are not even the same part of speech. "ses" is an abbrev and "stu" an unknown, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ses" or "stu"?
"ses" is the more common of the two: it sits at frequency rank #26,610 in our German list, against #47,032 for "stu". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "ses" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "stu" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #354,782 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "ses" and "stu" also get mixed up with nearby pairs, the highest-scored neighbour is "seg vs stu". Nearby pair

Confusion rank #354,782 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list