AchtervsÄtherTell them apart

Which to use

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

#18,146
“Achter” frequency rank
#33,933
“Äther” frequency rank
52079
confusion score

Side-by-Side Comparison

Feature Achter Äther
Definition die Ziffer 8 oder etwas, das die Ziffer 8 trägt (zum Beispiel ein Sportler mit der Trikotnummer 8) verschiedene organische Verbindungen mit einer Sauerstoffbrücke als funktionelle Gruppe

Where the eye mixes Achter and Äther

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

6 ch
Achter
5 ch
Äther

Visual trap between Achter and Äther

A purely visual mix-up. Achter ([ˈaxtɐ]) and Äther ([ˈɛːtɐ]) 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 1 letter(s) in length. Our composite confusion score for this pair is 52079, derived from the frequency rank of both members and their visual similarity.

Achter is recorded at frequency rank #18,146, classified as anoun, pronounced [ˈaxtɐ]. Äther is at rank #33,933, tagged as anoun, pronounced [ˈɛːtɐ].

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 52079, this pair ranks #1,110,765 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Achter vs Äther

Shared letters: ehrt. Private to "Achter": ac. Private to "Äther": ä.

"Achter" · 6 letters · shape VCCCVC  ·  "Äther" · 5 letters · shape VCCVC

Known mistypes of this pair

  • Achteracchter · achetr · achhter · achterr · achtre · achtter · acther · ahcter

Frequently Asked Questions

Is swapping "Achter" for "Äther" ever safe?
No. They are said differently ([ˈaxtɐ] versus [ˈɛːtɐ]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary German text, does "Achter" or "Äther" show up more?
"Achter" is the more common of the two: it sits at frequency rank #18,146 in our German list, against #33,933 for "Äther". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "Achter" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Äther" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,110,765 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "Achter" and "Äther" also get mixed up with nearby pairs, the highest-scored neighbour is "Äther vs Atze". 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 #1,110,765 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