seistvssonstWhich spelling fits?

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

Which to use

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

#32,764
“seist” frequency rank
#334
“sonst” frequency rank
33098
confusion score

Side-by-Side Comparison

Feature seist sonst
Definition 2. Person Singular Konjunktiv I Präsens von sein für gewöhnlich, im allgemeinen, bei anderen Gelegenheiten, zu anderer Zeit als gerade jetzt

Where the eye mixes seist and sonst

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. seist (CVVCC) and sonst (CVCCC) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

5 ch
seist
5 ch
sonst

Visual trap between seist and sonst

These two trip readers on the page rather than in the ear: seist is [zaɪ̯st] while sonst is [zɔnst]. 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 (unknown vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 33098, derived from the frequency rank of both members and their visual similarity.

seist is recorded at frequency rank #32,764, classified as anunknown, pronounced [zaɪ̯st]. sonst is at rank #334, tagged as anadv, pronounced [zɔnst].

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 33098, this pair ranks #1,693,311 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of seist vs sonst

Shared letters: st. Private to "seist": ei. Private to "sonst": no.

"seist" · 5 letters · shape CVVCC  ·  "sonst" · 5 letters · shape CVCCC

Known mistypes of this pair

  • seist ← esist · seisst · seistt · seits · sesit · siest · sseist
  • sonst ← osnst · snost · sonnst · sonsst · sonstt · sonts · sosnt · ssonst

Frequently Asked Questions

Do "seist" and "sonst" mean the same thing in a sentence?
No - they are not even the same part of speech. "seist" is an unknown and "sonst" an adverb, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "seist" or "sonst" show up more?
"sonst" is the more common of the two: it sits at frequency rank #334 in our German list, against #32,764 for "seist". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

  • Full dictionary entry for "seist" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sonst" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,693,311 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "seist" and "sonst" also get mixed up with nearby pairs, the highest-scored neighbour is "seist vs steigst". 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 #1,693,311 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