butyl
/ˈbjuːtɪl/
"butyl" is a 5-letter English headword indexed on PlainSpell.
The verdict
“butyl” is uncommon English (frequency #52,833 among 31,241 “B” headwords), classed as a noun. The kind of spelling people second-guess.
- #52,833
- frequency rank, English
- 31,241
- “B” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any of four isomeric univalent hydrocarbon radicals, C₄H₉, formally derived from butane by the loss of a hydrogen atom.
Corpus desk
Index EN-butyl · butyl · English
butyl · rank #52,833 · 0 variants · 0 confusables
- FREQ-RARE #52,833
- LEN-MID 5 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 31,241
- PHOTO-FINISH buttercream
Nearest frequency peer: buttercream (-1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Frequency neighbourhood for “butyl”
Lower corpus rank = more everyday usage (inverted bar length for readability)
- bulking
bulking
47,171 corpus weight
- Bundestag
Bundestag
47,170 corpus weight
- buttercream
buttercream
47,169 corpus weight
- butyl
butyl
47,168 corpus weight
- canonization
canonization
47,166 corpus weight
- capitulate
capitulate
47,165 corpus weight
What this shows Bars show where “butyl” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.
| Property | Value |
|---|---|
| Headword | butyl |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈbjuːtɪl/ |
| Letters | 5 |
| Frequency rank | #52,833 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “butyl” sits in English frequency
Rare enough to double-check
butyl is uncommon English at frequency #52,833 among 31,241 “B” headwords, classed as anoun, transcribed /ˈbjuːtɪl/. Rarity is why readers land here mid-draft. 2 senses are on record.
No generated misspelling entries exist for butyl in our index, suggesting the orthography follows predictable English patterns. Our dataset records no confusable match here, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: PIE word *gʷṓws From but- + -yl. The correct English form is butyl, spelled B-U-T-Y-L.
Definition
- 1Any of four isomeric univalent hydrocarbon radicals, C₄H₉, formally derived from butane by the loss of a hydrogen atom.
- 2A synthetic rubber made by the polymerization of isobutylene.
Etymology
PIE word *gʷṓws From but- + -yl.
This word in other languages
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.
PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "butyl", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 5 letters (nearest by frequency 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.