Which to use
“eth” and “ether” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #22,077
- “eth” frequency rank
- #17,131
- “ether” frequency rank
- 39208
- confusion score
Side-by-Side Comparison
| Feature | eth | ether |
|---|---|---|
| Definition | A letter (capital Ð, small ð) introduced into Old English to represent its dental fricative, then not distinguished from the letter thorn, no longer used in English but still in modern use in Icelandic, the IPA and other phonetic alphabets to represent the voiced dental fricative "th" sound as in the English word then. The letter is also used in Faroese, but is generally silent in that language. | The substance formerly supposed to fill the upper regions of the atmosphere above the clouds, in particular as a medium breathed by deities. |
Where the eye mixes eth and ether
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.
Look-alike desk: eth vs ether
A purely visual mix-up. eth (/ɛð/) and ether (/ˈiː.θə/) 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) - “eth” sits inside “ether”. Our composite confusion score for this pair is 39208, derived from the frequency rank of both members and their visual similarity.
eth is recorded at frequency rank #22,077, classified as anoun, pronounced /ɛð/. ether is at rank #17,131, tagged as anoun, pronounced /ˈiː.θə/.
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 39208, this pair ranks #278,818 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of eth vs ether
Shared letters: eht. Private to "eth": -. Private to "ether": r.
"eth" · 3 letters · shape VCC · "ether" · 5 letters · shape VCCVC
Known mistypes of this pair
- ether ← ehter · etehr · etherr · ethher · ethre · etther · teher
Frequently Asked Questions
Can "eth" and "ether" be used interchangeably?
Which is more common, "eth" or "ether"?
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 "eth" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "ether" - compare definitions side by side with the headword page. Word entry
- This pair ranks #278,818 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "eth" and "ether" also get mixed up with nearby pairs, the highest-scored neighbour is "Eri vs eth". 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 #278,818 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.