sisvsslimConfusable pair

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

Which to use

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

#37,202
“sis” frequency rank
#18,066
“slim” frequency rank
55268
confusion score

Side-by-Side Comparison

Feature sis slim
Definition sechs (6) 2. Person Singular Imperativ Präsens Aktiv des Verbs slimen

Where the eye mixes sis and slim

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

3 ch
sis
4 ch
slim

Visual trap between sis and slim

These two trip readers on the page rather than in the ear: sis is [sis] while slim is [slaɪ̯m]. 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 (num vs verb), which is usually the fastest check. Our composite confusion score for this pair is 55268, derived from the frequency rank of both members and their visual similarity.

sis is recorded at frequency rank #37,202, classified as anum, pronounced [sis]. slim is at rank #18,066, tagged as averb, pronounced [slaɪ̯m].

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 55268, this pair ranks #986,195 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of sis vs slim

Shared letters: is. Private to "sis": -. Private to "slim": lm.

"sis" · 3 letters · shape CVC  ·  "slim" · 4 letters · shape CCVC

Known mistypes of this pair

  • slimlsim · silm · slimm · sllim · slmi · sslim

Frequently Asked Questions

Is swapping "sis" for "slim" ever safe?
No - they are not even the same part of speech. "sis" is a num and "slim" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sis" or "slim"?
"slim" is the more common of the two: it sits at frequency rank #18,066 in our German list, against #37,202 for "sis". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "sis" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "slim" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #986,195 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "sis" and "slim" 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 #986,195 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