ullivsUlmTell them apart

Quick tell: ulli is a unknown, Ulm is a name, so they fill different roles in a sentence.

Which to use

“ulli” is an unknown and “Ulm” is a name - they look or sound alike but fill different roles in a sentence.

#32,322
“ulli” frequency rank
#4,742
“Ulm” frequency rank
37064
confusion score

Side-by-Side Comparison

Feature ulli Ulm
Definition Dativ Singular des Indefinitpronomens ullus an der Donau gelegene Stadt in Baden-Württemberg

Letter map: ulli vs Ulm

Shared letters muted; letters that set ulli and Ulm apart highlighted. Shared run: 2.

4 ch
ulli
3 ch
Ulm

Grammar separator: ulli vs Ulm

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ulli is anunknown and Ulmaname. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 37064, derived from the frequency rank of both members and their visual similarity.

ulli is recorded at frequency rank #32,322, classified as anunknown, pronounced […]. Ulm is at rank #4,742, tagged as aname, pronounced [ʊlm].

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 37064, this pair ranks #1,599,725 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of ulli vs Ulm

Shared letters: lu. Private to "ulli": i. Private to "Ulm": m.

"ulli" · 4 letters · shape VCCV  ·  "Ulm" · 3 letters · shape VCC

Known mistypes of this pair

  • ulliluli · uli · ulil

Frequently Asked Questions

Is swapping "ulli" for "Ulm" ever safe?
No - they are not even the same part of speech. "ulli" is an unknown and "Ulm" a name, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ulli" or "Ulm"?
"Ulm" is the more common of the two: it sits at frequency rank #4,742 in our German list, against #32,322 for "ulli". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "ulli" and "Ulm".

  • Full dictionary entry for "ulli" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Ulm" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,599,725 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "ulli" and "Ulm" also get mixed up with nearby pairs, the highest-scored neighbour is "puzzles vs ulli". 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 #1,599,725 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