sichvssisTell them apart

Quick tell: sich is a pronoun, sis is a num, so they fill different roles in a sentence.

Which to use

“sich” is a pronoun and “sis” is a num - they look or sound alike but fill different roles in a sentence.

#20
“sich” frequency rank
#37,202
“sis” frequency rank
37222
confusion score

Side-by-Side Comparison

Feature sich sis
Definition Reflexivpronomen der dritten Person Singular sechs (6)

Where the eye mixes sich and sis

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
sich
3 ch
sis

Visual trap between sich and sis

These two trip readers on the page rather than in the ear: sich is [zɪç] while sis is [sis]. 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 (pronoun vs num), which is usually the fastest check. Our composite confusion score for this pair is 37222, derived from the frequency rank of both members and their visual similarity.

sich is recorded at frequency rank #20, classified as apron, pronounced [zɪç]. sis is at rank #37,202, tagged as anum, pronounced [sis].

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 37222, this pair ranks #1,595,749 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sich vs sis

Shared letters: is. Private to "sich": ch. Private to "sis": -.

"sich" · 4 letters · shape CVCC  ·  "sis" · 3 letters · shape CVC

Known mistypes of this pair

  • sichisch · scih · sicch · sichh · sihc · ssich

Frequently Asked Questions

Do "sich" and "sis" mean the same thing in a sentence?
No - they are not even the same part of speech. "sich" is a pronoun and "sis" a num, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "sich" or "sis" show up more?
"sich" is the more common of the two: it sits at frequency rank #20 in our German list, against #37,202 for "sis". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "sich" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sis" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,595,749 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "sich" and "sis" also get mixed up with nearby pairs, the highest-scored neighbour is "seg vs sis". 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 #1,595,749 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