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 46,516 “P” headwords), classed as a noun. The kind of spelling people second-guess.
- #94,146
- frequency rank, English
- 46,516
- “P” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A first-generation H₁ receptor antagonist derived from phenothiazine, used as antihistamine and antiemetic medication with strong sedative effects.
| 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) |
Where “promethazine” sits in English frequency
Rare enough to double-check
promethazine is uncommon English at frequency #94,146 among 46,516 “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.
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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Using “promethazine”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is P-R-O-M-E-T-H-A-Z-I-N-E - every other letter order is a misspelling in standard orthography.
- Say it as /pɹə(ʊ)ˈmɛθ.ə.ziːn/ (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.