klugvskunWhich spelling fits?

Quick tell: klug is a adjective, kun is a preposition, so they fill different roles in a sentence.

Which to use

“klug” is an adjective and “kun” is a preposition - they look or sound alike but fill different roles in a sentence.

#5,727
“klug” frequency rank
#35,882
“kun” frequency rank
41609
confusion score

Side-by-Side Comparison

Feature klug kun
Definition mit scharfem Verstand und logischem Denkvermögen ausgestattet; mit gut entwickelter Denkfähigkeit mit

Where the eye mixes klug and kun

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

4 ch
klug
3 ch
kun

Look-alike desk: klug vs kun

These two trip readers on the page rather than in the ear: klug is [kluːk] while kun is [kun]. 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 preposition), which is usually the fastest check. Our composite confusion score for this pair is 41609, derived from the frequency rank of both members and their visual similarity.

klug is recorded at frequency rank #5,727, classified as anadj, pronounced [kluːk]. kun is at rank #35,882, tagged as aprep, pronounced [kun].

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 41609, this pair ranks #1,474,349 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of klug vs kun

Shared letters: ku. Private to "klug": gl. Private to "kun": n.

"klug" · 4 letters · shape CCVC  ·  "kun" · 3 letters · shape CVC

Known mistypes of this pair

  • klugkklug · klgu · kllug · klugg · kulg · lkug

Frequently Asked Questions

Can "klug" and "kun" be used interchangeably?
No - they are not even the same part of speech. "klug" is an adjective and "kun" a preposition, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "klug" or "kun"?
"klug" is the more common of the two: it sits at frequency rank #5,727 in our German list, against #35,882 for "kun". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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 "klug" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "kun" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,474,349 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "klug" and "kun" also get mixed up with nearby pairs, the highest-scored neighbour is "Koi vs kun". 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 #1,474,349 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