kostenlosvskostenlosenWhat's the difference?

Which to use

“kostenlos” and “kostenlosen” are a confusable German pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#1,517
“kostenlos” frequency rank
#8,739
“kostenlosen” frequency rank
10256
confusion score

Side-by-Side Comparison

Feature kostenlos kostenlosen
Definition nicht mit Kosten verbunden Genitiv Singular Maskulinum der starken Deklination des Positivs des Adjektivs kostenlos

Where the eye mixes kostenlos and kostenlosen

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. kostenlos runs 9 letters (CVCCVCCVC) against kostenlosen's 11 (CVCCVCCVCVC) - the length gap alone is often enough to separate them once you know to check it.

9 ch
kostenlos
11 ch
kostenlosen

Visual trap between kostenlos and kostenlosen

A purely visual mix-up. kostenlos ([ˈkɔstn̩loːs]) and kostenlosen ([ˈkɔstn̩loːzn̩]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 extra letter(s) - “kostenlos” sits inside “kostenlosen”. Our composite confusion score for this pair is 10256, derived from the frequency rank of both members and their visual similarity.

kostenlos is recorded at frequency rank #1,517, classified as anadj, pronounced [ˈkɔstn̩loːs]. kostenlosen is at rank #8,739, tagged as anadj, pronounced [ˈkɔstn̩loːzn̩].

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 10256, this pair ranks #1,976,022 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of kostenlos vs kostenlosen

Shared letters: eklnost. Private to "kostenlos": -. Private to "kostenlosen": -.

"kostenlos" · 9 letters · shape CVCCVCCVC  ·  "kostenlosen" · 11 letters · shape CVCCVCCVCVC

Known mistypes of this pair

  • kostenlos ← kkostenlos · kosetnlos · kosstenlos · kostelnos · kostenllos · kostenloss · kostenlso · kostennlos
  • kostenlosen ← kkostenlosen · kosetnlosen · kosstenlosen · kostelnosen · kostenllosen · kostenloesn · kostenlosenn · kostenlosne

Frequently Asked Questions

Is swapping "kostenlos" for "kostenlosen" ever safe?
No. They are said differently ([ˈkɔstn̩loːs] versus [ˈkɔstn̩loːzn̩]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "kostenlos" or "kostenlosen"?
"kostenlos" is the more common of the two: it sits at frequency rank #1,517 in our German list, against #8,739 for "kostenlosen". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "kostenlos" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "kostenlosen" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,976,022 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "kostenlos" and "kostenlosen" also get mixed up with nearby pairs, the highest-scored neighbour is "kostenlosen vs kostenloser". 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 #1,976,022 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