promethazine
/pɹə(ʊ)ˈmɛθ.ə.ziːn/
"promethazine" is a 12-letter English headword indexed on PlainSpell.
The verdict
“promethazine” is uncommon English (frequency #94,146 among 4,417 “P” headwords), classed as a noun. The kind of spelling people second-guess.
- #94,146
- frequency rank, English
- 4,417
- “P” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A first-generation H₁ receptor antagonist derived from phenothiazine, used as antihistamine and antiemetic medication with strong sedative effects.
Corpus desk
Index EN-promethazine · promethazine · English
promethazine · rank #94,146 · 0 variants · 0 confusables
- FREQ-RARE #94,146
- LEN-MEGA 12 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 4,417
- PHOTO-FINISH pretest
Nearest frequency peer: pretest (-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 “promethazine”
Sparse band: bars invert rank so rarer forms read shorter
- prest
prest
5,859 corpus weight
- Prestwich
Prestwich
5,857 corpus weight
- pretest
pretest
5,856 corpus weight
- promethazine
promethazine
5,855 corpus weight
- propagandis…
propagandistic
5,854 corpus weight
- PTM
PTM
5,850 corpus weight
What this shows Long-tail view: where “promethazine” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | promethazine |
| Language | English |
| Part of speech | Noun |
| IPA | /pɹə(ʊ)ˈmɛθ.ə.ziːn/ |
| Letters | 12 |
| Frequency rank | #94,146 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “promethazine” in English
Rare enough to double-check
promethazine is uncommon English at frequency #94,146 among 4,417 “P” headwords, classed as anoun, transcribed /pɹə(ʊ)ˈmɛθ.ə.ziːn/. Rarity is why readers land here mid-draft. Gloss: "A first-generation H₁ receptor antagonist derived from phenothiazine, used as antihistamine and antiemetic medication with strong sedative effects.".
The misspelling generator found no plausible variants for promethazine, a sign its spelling follows regular English conventions. No confusable counterpart is on file for this word, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From pro(p)- + meth- + (phenothi)azine. The correct English form is promethazine, spelled P-R-O-M-E-T-H-A-Z-I-N-E.
Definition
- 1A first-generation H₁ receptor antagonist derived from phenothiazine, used as antihistamine and antiemetic medication with strong sedative effects.
Recorded use
Wiktionary exampleThese source excerpts show how promethazine appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
For quotations using this term, see Citations:promethazine.
Etymology
From pro(p)- + meth- + (phenothi)azine.
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.
Frequently Asked Questions
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "promethazine", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 12 letters (nearest by frequency rank).