diethyl
/daɪˈɛθɪl/
"diethyl" is a 7-letter English headword indexed on PlainSpell.
The verdict
“diethyl” is uncommon English (frequency #73,128 among 26,416 “D” headwords), classed as a noun. The kind of spelling people second-guess.
- #73,128
- frequency rank, English
- 26,416
- “D” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Two ethyl groups attached to the same molecule.
| Property | Value |
|---|---|
| Headword | diethyl |
| Language | English |
| Part of speech | Noun |
| IPA | /daɪˈɛθɪl/ |
| Letters | 7 |
| Frequency rank | #73,128 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “diethyl” sits in English frequency
Rare enough to double-check
diethyl is uncommon English at frequency #73,128 among 26,416 “D” headwords, classed as anoun, transcribed /daɪˈɛθɪl/. Rarity is why readers land here mid-draft. Gloss: "Two ethyl groups attached to the same molecule.".
diethyl has no tracked misspelling variants, which points to an orthography that plays by predictable English rules. We don't track a confusable pairing for this entry, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From di- + ethyl. The correct English form is diethyl, spelled D-I-E-T-H-Y-L.
Definition
- 1Two ethyl groups attached to the same molecule.
Etymology
From di- + ethyl.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “diethyl”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-I-E-T-H-Y-L - every other letter order is a misspelling in standard orthography.
- Say it as /daɪˈɛθɪl/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.