clozapine

/ˈkləʊ.zə.piːn/

//ˈkləʊ.zə.piːn// noun

By · According to Wiktionary data (CC BY-SA) ·

"clozapine" is a 9-letter English headword indexed on PlainSpell.

The verdict

“clozapine” is uncommon English (frequency #95,833 among 43,570 “C” headwords), classed as a noun. The kind of spelling people second-guess.

#95,833
frequency rank, English
43,570
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A sedative drug used to treat schizophrenia.

Key facts for clozapine
PropertyValue
Headwordclozapine
LanguageEnglish
Part of speechNoun
IPA/ˈkləʊ.zə.piːn/
Letters9
Frequency rank#95,833
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “clozapine” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). clozapine lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

clozapine is uncommon English at frequency #95,833 among 43,570 “C” headwords, classed as anoun, transcribed /ˈkləʊ.zə.piːn/. Rarity is why readers land here mid-draft. Gloss: "A sedative drug used to treat schizophrenia.".

No misspelling variants are generated for clozapine in our index, which points to an orthography that plays by predictable English rules. Our confusable-pair dataset has no match for it, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From chlo(ro)- + -zapine (“alteration of (benzodi)azepine”). The correct English form is clozapine, spelled C-L-O-Z-A-P-I-N-E.

Definition

  1. 1
    A sedative drug used to treat schizophrenia.

Etymology

From chlo(ro)- + -zapine (“alteration of (benzodi)azepine”).

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

How do you spell "clozapine"?
"clozapine" is spelled C-L-O-Z-A-P-I-N-E. The IPA pronunciation is /ˈkləʊ.zə.piːn/.
What does "clozapine" mean?
As a noun, "clozapine" means: A sedative drug used to treat schizophrenia.
How do you pronounce "clozapine"?
The IPA (International Phonetic Alphabet) transcription for "clozapine" is /ˈkləʊ.zə.piːn/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "clozapine"?
From chlo(ro)- + -zapine (“alteration of (benzodi)azepine”). See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “clozapine”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is C-L-O-Z-A-P-I-N-E - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈkləʊ.zə.piːn/ (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.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list