Which to use
“finster” is an adjective and “foster” is a verb - they look or sound alike but fill different roles in a sentence.
- #23,932
- “finster” frequency rank
- #18,247
- “foster” frequency rank
- 42179
- confusion score
Side-by-Side Comparison
| Feature | finster | foster |
|---|---|---|
| Definition | sehr dunkel | nähren, pflegen, aufziehen |
Where the eye mixes finster and foster
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. finster runs 7 letters (CVCCCVC) against foster's 6 (CVCCVC) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses finster with foster
These two trip readers on the page rather than in the ear: finster is [ˈfɪnstɐ] while foster is [fɒstə(r)]. 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 (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 42179, derived from the frequency rank of both members and their visual similarity.
finster is recorded at frequency rank #23,932, classified as anadj, pronounced [ˈfɪnstɐ]. foster is at rank #18,247, tagged as averb, pronounced [fɒstə(r)].
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 42179, this pair ranks #1,457,193 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of finster vs foster
Shared letters: efrst. Private to "finster": in. Private to "foster": o.
"finster" · 7 letters · shape CVCCCVC · "foster" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "finster" for "foster" ever safe?
In ordinary German text, does "finster" or "foster" show up more?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "finster" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "foster" - compare definitions side by side with the headword page. Word entry
- This pair ranks #1,457,193 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "finster" and "foster" also get mixed up with nearby pairs, the highest-scored neighbour is "feinster vs finster". 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 #1,457,193 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.