seinsvsseriösWhich spelling fits?

Quick tell: seins is a unknown, seriös is an adjective, so they fill different roles in a sentence.

Which to use

“seins” is an unknown and “seriös” is an adjective - they look or sound alike but fill different roles in a sentence.

#15,475
“seins” frequency rank
#12,790
“seriös” frequency rank
28265
confusion score

Side-by-Side Comparison

Feature seins seriös
Definition Nominativ Singular Neutrum bei nicht attributivem Gebrauch des Possessivpronomens sein ordentlich

Where the eye mixes seins and seriös

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. seins runs 5 letters (CVVCC) against seriös's 6 (CVCVVC) - the length gap alone is often enough to separate them once you know to check it.

5 ch
seins
6 ch
seriös

Visual trap between seins and seriös

These two trip readers on the page rather than in the ear: seins is [zaɪ̯ns] while seriös is [zeˈʁi̯øːs]. 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 adjective), which is usually the fastest check. Our composite confusion score for this pair is 28265, derived from the frequency rank of both members and their visual similarity.

seins is recorded at frequency rank #15,475, classified as anunknown, pronounced [zaɪ̯ns]. seriös is at rank #12,790, tagged as anadj, pronounced [zeˈʁi̯øːs].

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 28265, this pair ranks #1,787,807 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of seins vs seriös

Shared letters: eis. Private to "seins": n. Private to "seriös": rö.

"seins" · 5 letters · shape CVVCC  ·  "seriös" · 6 letters · shape CVCVVC

Known mistypes of this pair

  • seins ← esins · seinns · seinss · seisn · senis · siens · sseins

Frequently Asked Questions

Do "seins" and "seriös" mean the same thing in a sentence?
No - they are not even the same part of speech. "seins" is an unknown and "seriös" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "seins" or "seriös"?
"seriös" is the more common of the two: it sits at frequency rank #12,790 in our German list, against #15,475 for "seins". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "seins" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "seriös" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,787,807 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "seins" and "seriös" also get mixed up with nearby pairs, the highest-scored neighbour is "seins vs spies". 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 #1,787,807 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