siebzigvssiebzigerTell them apart

Quick tell: siebzig is a num, siebziger is an adjective, so they fill different roles in a sentence.

Which to use

“siebzig” is a num and “siebziger” is an adjective - they look or sound alike but fill different roles in a sentence.

#32,271
“siebzig” frequency rank
#21,059
“siebziger” frequency rank
53330
confusion score

Side-by-Side Comparison

Feature siebzig siebziger
Definition sieben mal zehn, die Kardinalzahl zwischen 69 und 71 die Kardinalzahl siebzig betreffend in Bezug auf ein bestimmtes Jahr, einen bestimmten Jahrgang, eine bestimmte Nummer, einen bestimmten Wert, eine bestimmte Zahl oder dergleichen

Where the eye mixes siebzig and siebziger

Muted = shared; highlighted = the visual trap. They share 7 letters in sequence.

7 ch
siebzig
9 ch
siebziger

Look-alike desk: siebzig vs siebziger

These two trip readers on the page rather than in the ear: siebzig is [ˈziːpt͡sɪç] while siebziger is [ˈziːpt͡sɪɡɐ]. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “siebzig” sits inside “siebziger”, and the parts of speech differ too (num vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 53330, derived from the frequency rank of both members and their visual similarity.

siebzig is recorded at frequency rank #32,271, classified as anum, pronounced [ˈziːpt͡sɪç]. siebziger is at rank #21,059, tagged as anadj, pronounced [ˈziːpt͡sɪɡɐ].

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 53330, this pair ranks #1,062,231 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of siebzig vs siebziger

Shared letters: begisz. Private to "siebzig": -. Private to "siebziger": r.

"siebzig" · 7 letters · shape CVVCCVC  ·  "siebziger" · 9 letters · shape CVVCCVCVC

Known mistypes of this pair

  • siebzigisebzig · seibzig · sibezig · siebbzig · siebizg · siebzgi · siebzigg · siebzzig
  • siebzigerisebziger · seibziger · sibeziger · siebbziger · siebizger · siebzgier · siebziegr · siebzigerr

Frequently Asked Questions

Can "siebzig" and "siebziger" be used interchangeably?
No - they are not even the same part of speech. "siebzig" is a num and "siebziger" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "siebzig" or "siebziger" show up more?
"siebziger" is the more common of the two: it sits at frequency rank #21,059 in our German list, against #32,271 for "siebzig". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "siebzig" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "siebziger" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,062,231 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • 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 #1,062,231 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