StauvsstuTell them apart

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

Which to use

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

#7,819
“Stau” frequency rank
#47,032
“stu” frequency rank
54851
confusion score

Side-by-Side Comparison

Feature Stau stu
Definition durch eine Behinderung oder ein Hindernis verursachte Störung des Durchflusses oder Durchgangs; Nomen acti: Ergebnis des Stauens Dativ Singular des Numerales sto

Where the eye mixes Stau and stu

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. Stau runs 4 letters (CCVV) against stu's 3 (CCV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
Stau
3 ch
stu

Visual trap between Stau and stu

These two trip readers on the page rather than in the ear: Stau is [ʃtaʊ̯] while stu is [stʊ]. 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 (noun vs unknown), which is usually the fastest check. Our composite confusion score for this pair is 54851, derived from the frequency rank of both members and their visual similarity.

Stau is recorded at frequency rank #7,819, classified as anoun, pronounced [ʃtaʊ̯]. 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 54851, this pair ranks #1,002,534 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Stau vs stu

Shared letters: stu. Private to "Stau": a. Private to "stu": -.

"Stau" · 4 letters · shape CCVV  ·  "stu" · 3 letters · shape CCV

Known mistypes of this pair

  • Stau ← satu · sstau · sttau · stua · tsau

Frequently Asked Questions

Is swapping "Stau" for "stu" ever safe?
No - they are not even the same part of speech. "Stau" is a noun and "stu" an unknown, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "Stau" or "stu" show up more?
"Stau" is the more common of the two: it sits at frequency rank #7,819 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.

What to do next

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

  • Full dictionary entry for "Stau" 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 #1,002,534 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Stau" and "stu" also get mixed up with nearby pairs, the highest-scored neighbour is "seg vs stu". 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 #1,002,534 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