seinervsseitherConfusable pair

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

Which to use

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

#142
“seiner” frequency rank
#4,647
“seither” frequency rank
4789
confusion score

Side-by-Side Comparison

Feature seiner seither
Definition Genitiv des Personalpronomens er von einem bestimmten Zeitpunkt an

Where the eye mixes seiner and seither

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. seiner runs 6 letters (CVVCVC) against seither's 7 (CVVCCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
seiner
7 ch
seither

Look-alike desk: seiner vs seither

These two trip readers on the page rather than in the ear: seiner is [ˈzaɪ̯nɐ] while seither is [ˌzaɪ̯tˈheːɐ̯]. 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 (unknown vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 4789, derived from the frequency rank of both members and their visual similarity.

seiner is recorded at frequency rank #142, classified as anunknown, pronounced [ˈzaɪ̯nɐ]. seither is at rank #4,647, tagged as anadv, pronounced [ˌzaɪ̯tˈheːɐ̯].

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 4789, this pair ranks #1,996,667 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of seiner vs seither

Shared letters: eirs. Private to "seiner": n. Private to "seither": ht.

"seiner" · 6 letters · shape CVVCVC  ·  "seither" · 7 letters · shape CVVCCVC

Known mistypes of this pair

  • seiner ← esiner · seienr · seinerr · seinner · seinre · senier · siener · sseiner
  • seither ← esither · seihter · seitehr · seitherr · seithher · seithre · seitther · setiher

Frequently Asked Questions

Do "seiner" and "seither" mean the same thing in a sentence?
No - they are not even the same part of speech. "seiner" is an unknown and "seither" an adverb, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "seiner" or "seither" show up more?
"seiner" is the more common of the two: it sits at frequency rank #142 in our German list, against #4,647 for "seither". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "seiner" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "seither" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,996,667 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "seiner" and "seither" also get mixed up with nearby pairs, the highest-scored neighbour is "seiner vs Steiners". 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 #1,996,667 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