Which to use
“ester” and “éther” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #35,506
- “ester” frequency rank
- #27,671
- “éther” frequency rank
- 63177
- confusion score
Side-by-Side Comparison
| Feature | ester | éther |
|---|---|---|
| Definition | Molécule obtenue par la réaction chimique entre un alcool et un oxoacide. | Substance que l’on supposait remplir l’espace intersidéral. |
Where the eye mixes ester and éther
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Why the eye confuses ester with éther
A purely visual mix-up. ester (\ɛs.tɛʁ\) and éther (\e.tɛʁ\) 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 63177, derived from the frequency rank of both members and their visual similarity.
ester is recorded at frequency rank #35,506, classified as anoun, pronounced \ɛs.tɛʁ\. 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 63177, this pair ranks #83,359 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of ester vs éther
Shared letters: ert. Private to "ester": s. Private to "éther": hé.
"ester" · 5 letters · shape VCCVC · "éther" · 5 letters · shape VCCVC
Known mistypes of this pair
- ester ← esetr · esster · esterr · estre · estter · etser · seter
Frequently Asked Questions
Can "ester" and "éther" be used interchangeably?
Frequency check: "ester" vs "éther" - which ranks higher?
Useful next steps
Eye-level mix-up between "ester" and "éther" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "ester" 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 #83,359 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
- "ester" and "éther" also get mixed up with nearby pairs, the highest-scored neighbour is "épier vs ester". 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 #83,359 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.