LuftvsLüftenTell them apart

Which to use

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

#818
“Luft” frequency rank
#17,355
“Lüften” frequency rank
18173
confusion score

Side-by-Side Comparison

Feature Luft Lüften
Definition überwiegend aus Stickstoff und Sauerstoff bestehendes Gasgemisch, das Lebewesen zum Atmen benötigen Aussetzung der frischen Luft

Where the eye mixes Luft and Lüften

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
Luft
6 ch
Lüften

Why the eye confuses Luft with Lüften

A purely visual mix-up. Luft ([lʊft]) and Lüften ([ˈlʏftn̩]) 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 letter(s) in length. Our composite confusion score for this pair is 18173, derived from the frequency rank of both members and their visual similarity.

Luft is recorded at frequency rank #818, classified as anoun, pronounced [lʊft]. Lüften is at rank #17,355, tagged as anoun, pronounced [ˈlʏftn̩].

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 18173, this pair ranks #1,920,728 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Luft vs Lüften

Shared letters: flt. Private to "Luft": u. Private to "Lüften": enü.

"Luft" · 4 letters · shape CVCC  ·  "Lüften" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • Luftlfut · lluft · lufft · luftt · lutf · ulft

Frequently Asked Questions

Do "Luft" and "Lüften" mean the same thing in a sentence?
No. They are said differently ([lʊft] versus [ˈlʏftn̩]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "Luft" or "Lüften"?
"Luft" is the more common of the two: it sits at frequency rank #818 in our German list, against #17,355 for "Lüften". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

  • Full dictionary entry for "Luft" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Lüften" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,920,728 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Luft" and "Lüften" also get mixed up with nearby pairs, the highest-scored neighbour is "letten vs Lüften". 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 #1,920,728 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