einervsétherWhich spelling fits?

Quick tell: einer is a adjective, éther is a noun, so they fill different roles in a sentence.

Which to use

“einer” is an adjective and “éther” is a noun - they look or sound alike but fill different roles in a sentence.

#48,484
“einer” frequency rank
#27,671
“éther” frequency rank
76155
confusion score

Side-by-Side Comparison

Feature einer éther
Definition Génitif féminin singulier de la déclinaison forte de ein. Substance que l’on supposait remplir l’espace intersidéral.

Where the eye mixes einer and éther

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

5 ch
einer
5 ch
éther

Visual trap between einer and éther

These two trip readers on the page rather than in the ear: einer is \ˈaɪ̯nɐ\ while éther is \e.tɛʁ\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 3 positions, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 76155, derived from the frequency rank of both members and their visual similarity.

einer is recorded at frequency rank #48,484, classified as anadj, pronounced \ˈaɪ̯nɐ\. éther is at rank #27,671, tagged as anoun, pronounced \e.tɛʁ\.

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 76155, this pair ranks #31,941 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of einer vs éther

Shared letters: er. Private to "einer": in. Private to "éther": hté.

"einer" · 5 letters · shape VVCVC  ·  "éther" · 5 letters · shape VCCVC

Known mistypes of this pair

  • einereienr · einerr · einner · einre · enier · iener

Frequently Asked Questions

Is swapping "einer" for "éther" ever safe?
No - they are not even the same part of speech. "einer" is an adjective and "éther" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary French text, does "einer" or "éther" show up more?
"éther" is the more common of the two: it sits at frequency rank #27,671 in our French list, against #48,484 for "einer". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

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

  • Full dictionary entry for "einer" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "éther" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #31,941 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "einer" and "éther" also get mixed up with nearby pairs, the highest-scored neighbour is "einer vs épier". 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 #31,941 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list