Alter vs Äther, What's the Difference?

Which to use

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

#455
“Alter” frequency rank: #33,933
“Äther” frequency rank: 34388
confusion score

Side-by-Side Comparison

Feature	Alter	Äther
Definition	alter Mann	verschiedene organische Verbindungen mit einer Sauerstoffbrücke als funktionelle Gruppe

Where the eye mixes Alter and Äther

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. Alter and Äther follow the identical consonant-vowel pattern (VCCVC). Same shape at a glance is often the real trap, independent of shared letters.

5 ch

Alter

5 ch

Äther

Why the eye confuses Alter with Äther

A purely visual mix-up. Alter ([ˈaltɐ]) 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 share most of their letters but differ in 3 positions. Our composite confusion score for this pair is 34388, derived from the frequency rank of both members and their visual similarity.

Alter is recorded at frequency rank #455, classified as anoun, pronounced [ˈaltɐ]. 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 34388, this pair ranks #1,664,461 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of Alter vs Äther

Shared letters: ert. Private to "Alter": al. Private to "Äther": hä.

"Alter" · 5 letters · shape VCCVC · "Äther" · 5 letters · shape VCCVC

Known mistypes of this pair

Alter ← aletr · allter · alterr · altre · altter · atler

Frequently Asked Questions

Do "Alter" and "Äther" mean the same thing in a sentence?

No. They are said differently ([ˈaltɐ] versus [ˈɛːtɐ]) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.

In ordinary German text, does "Alter" or "Äther" show up more?

"Alter" is the more common of the two: it sits at frequency rank #455 in our German list, against #33,933 for "Äther". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Useful next steps

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

Full dictionary entry for "Alter" 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 #1,664,461 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
"Alter" 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 #1,664,461 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.