SeifertvsseinerWhich spelling fits?

Quick tell: Seifert is a name, seiner is an unknown, so they fill different roles in a sentence.

Which to use

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

#24,507
“Seifert” frequency rank
#142
“seiner” frequency rank
24649
confusion score

Side-by-Side Comparison

Feature Seifert seiner
Definition deutscher Nachname, Familienname Genitiv des Personalpronomens er

Where the eye mixes Seifert and seiner

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

7 ch
Seifert
6 ch
seiner

Look-alike desk: Seifert vs seiner

These two trip readers on the page rather than in the ear: Seifert is [ˈzaɪ̯fɐt] while seiner is [ˈzaɪ̯nɐ]. 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 (name vs unknown), which is usually the fastest check. Our composite confusion score for this pair is 24649, derived from the frequency rank of both members and their visual similarity.

Seifert is recorded at frequency rank #24,507, classified as aname, pronounced [ˈzaɪ̯fɐt]. seiner is at rank #142, tagged as anunknown, pronounced [ˈzaɪ̯nɐ].

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 24649, this pair ranks #1,844,653 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Seifert vs seiner

Shared letters: eirs. Private to "Seifert": ft. Private to "seiner": n.

"Seifert" · 7 letters · shape CVVCVCC  ·  "seiner" · 6 letters · shape CVVCVC

Known mistypes of this pair

  • Seifertesifert · sefiert · seiefrt · seiferrt · seifertt · seifetr · seiffert · seifret
  • seineresiner · seienr · seinerr · seinner · seinre · senier · siener · sseiner

Frequently Asked Questions

Can "Seifert" and "seiner" be used interchangeably?
No - they are not even the same part of speech. "Seifert" is a name and "seiner" an unknown, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "Seifert" or "seiner" show up more?
"seiner" is the more common of the two: it sits at frequency rank #142 in our German list, against #24,507 for "Seifert". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Eye-level mix-up between "Seifert" and "seiner" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "Seifert" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "seiner" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,844,653 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Seifert" and "seiner" also get mixed up with nearby pairs, the highest-scored neighbour is "seifen vs Seifert". 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 #1,844,653 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