LuftvsLupeTell them apart

Which to use

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

#818
“Luft” frequency rank
#11,092
“Lupe” frequency rank
11910
confusion score

Side-by-Side Comparison

Feature Luft Lupe
Definition überwiegend aus Stickstoff und Sauerstoff bestehendes Gasgemisch, das Lebewesen zum Atmen benötigen Linse, meist aus Glas, zur optischen Vergrößerung

Where the eye mixes Luft and Lupe

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

4 ch
Luft
4 ch
Lupe

Visual trap between Luft and Lupe

A purely visual mix-up. Luft ([lʊft]) and Lupe ([ˈluːpə]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 11910, derived from the frequency rank of both members and their visual similarity.

Luft is recorded at frequency rank #818, classified as anoun, pronounced [lʊft]. Lupe is at rank #11,092, tagged as anoun, pronounced [ˈluːpə].

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 11910, this pair ranks #1,967,271 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Luft vs Lupe

Shared letters: lu. Private to "Luft": ft. Private to "Lupe": ep.

"Luft" · 4 letters · shape CVCC  ·  "Lupe" · 4 letters · shape CVCV

Known mistypes of this pair

  • Luftlfut · lluft · lufft · luftt · lutf · ulft
  • Lupellupe · lpue · luep · luppe · ulpe

Frequently Asked Questions

Is swapping "Luft" for "Lupe" ever safe?
No. They are said differently ([lʊft] versus [ˈluːpə]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "Luft" vs "Lupe" - which ranks higher?
"Luft" is the more common of the two: it sits at frequency rank #818 in our German list, against #11,092 for "Lupe". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "Luft" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Lupe" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,967,271 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Luft" and "Lupe" also get mixed up with nearby pairs, the highest-scored neighbour is "lame vs Lupe". 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 #1,967,271 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