buprenorphine
/ˌbju.pɹəˈnɔɹˌfin/
"buprenorphine" is a 13-letter English headword indexed on PlainSpell.
The verdict
“buprenorphine” is uncommon English (frequency #73,938 among 4,121 “B” headwords), classed as a noun. The kind of spelling people second-guess.
- #73,938
- frequency rank, English
- 4,121
- “B” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A semisynthetic narcotic analgesic that is administered in the form of its hydrochloride C₂₉H₄₁NO₄·HCl to control moderate to severe pain and treat opioid dependence.
Corpus desk
Index EN-buprenorphine · buprenorphine · English
buprenorphine · rank #73,938 · 0 variants · 0 confusables
- FREQ-RARE #73,938
- LEN-MEGA 13 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 4,121
- PHOTO-FINISH bunching
Nearest frequency peer: bunching (-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.
Long-tail ranks near “buprenorphine”
Sparse band: bars invert rank so rarer forms read shorter
- bulimic
bulimic
26,069 corpus weight
- bulked
bulked
26,068 corpus weight
- bunching
bunching
26,064 corpus weight
- buprenorphi…
buprenorphine
26,063 corpus weight
- caiman
caiman
26,061 corpus weight
- Caldecott
Caldecott
26,060 corpus weight
What this shows Long-tail view: where “buprenorphine” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | buprenorphine |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌbju.pɹəˈnɔɹˌfin/ |
| Letters | 13 |
| Frequency rank | #73,938 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “buprenorphine” in English
Rare enough to double-check
buprenorphine is uncommon English at frequency #73,938 among 4,121 “B” headwords, classed as anoun, transcribed /ˌbju.pɹəˈnɔɹˌfin/. Rarity is why readers land here mid-draft. Gloss: "A semisynthetic narcotic analgesic that is administered in the form of its hydrochloride C₂₉H₄₁NO₄·HCl to control moderate to severe pain and treat opioid dependence.".
The misspelling generator found no plausible variants for buprenorphine, since its letter pattern doesn't lend itself to common typo substitutions. This entry stands alone in our confusable dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: Blend of (tert-)butyl + cyprenorphine. The correct English form is buprenorphine, spelled B-U-P-R-E-N-O-R-P-H-I-N-E.
Definition
- 1A semisynthetic narcotic analgesic that is administered in the form of its hydrochloride C₂₉H₄₁NO₄·HCl to control moderate to severe pain and treat opioid dependence.
Etymology
Blend of (tert-)butyl + cyprenorphine.
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "buprenorphine", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 13 letters (nearest by frequency rank).