eisernvseisernerTell them apart

Which to use

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

#43,835
“eisern” frequency rank
#43,133
“eiserner” frequency rank
86968
confusion score

Side-by-Side Comparison

Feature eisern eiserner
Definition aus dem Metall Eisen bestehend Nominativ Singular Maskulinum der starken Flexion des Adjektivs eisern

Where the eye mixes eisern and eiserner

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.

6 ch
eisern
8 ch
eiserner

Visual trap between eisern and eiserner

A purely visual mix-up. eisern ([ˈaɪ̯zɐn]) and eiserner ([ˈaɪ̯zɐnɐ]) 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) - “eisern” sits inside “eiserner”. Our composite confusion score for this pair is 86968, derived from the frequency rank of both members and their visual similarity.

eisern is recorded at frequency rank #43,835, classified as anadj, pronounced [ˈaɪ̯zɐn]. eiserner is at rank #43,133, tagged as anadj, pronounced [ˈaɪ̯zɐnɐ].

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 86968, this pair ranks #86,468 of 2,006,359 scored German confusable pairs - among the most confusable pairs.

Orthographic DNA of eisern vs eiserner

Shared letters: einrs. Private to "eisern": -. Private to "eiserner": -.

"eisern" · 6 letters · shape VVCVCC  ·  "eiserner" · 8 letters · shape VVCVCCVC

Known mistypes of this pair

  • eiserneiesrn · eisenr · eisernn · eiserrn · eisren · eissern · esiern · iesern
  • eisernereiesrner · eisenrer · eiserenr · eisernerr · eisernner · eisernre · eiserrner · eisrener

Frequently Asked Questions

Can "eisern" and "eiserner" be used interchangeably?
No. They are said differently ([ˈaɪ̯zɐn] versus [ˈaɪ̯zɐnɐ]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "eisern" vs "eiserner" - which ranks higher?
"eiserner" is the more common of the two: it sits at frequency rank #43,133 in our German list, against #43,835 for "eisern". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "eisern" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "eiserner" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #86,468 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "eisern" and "eiserner" also get mixed up with nearby pairs, the highest-scored neighbour is "Eisenerz vs eiserner". 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 #86,468 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