chloroquine
/ˈklɔː.ɹə(ʊ).kwiːn/
"chloroquine" is a 11-letter English headword indexed on PlainSpell.
The verdict
“chloroquine” is uncommon English (frequency #87,139 among 5,599 “C” headwords), classed as a noun. The kind of spelling people second-guess.
- #87,139
- frequency rank, English
- 5,599
- “C” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A 4-aminoquinoline drug used to treat and prevent malaria, having the chemical formula C₁₈H₂₆ClN₃.
Corpus desk
Index EN-chloroquine · chloroquine · English
chloroquine · rank #87,139 · 0 variants · 0 confusables
- FREQ-RARE #87,139
- LEN-MEGA 11 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 5,599
- PHOTO-FINISH Chitwood
Nearest frequency peer: Chitwood (-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 “chloroquine”
Sparse band: bars invert rank so rarer forms read shorter
- chetty
chetty
12,867 corpus weight
- chirality
chirality
12,864 corpus weight
- Chitwood
Chitwood
12,863 corpus weight
- chloroquine
chloroquine
12,862 corpus weight
- choong
choong
12,861 corpus weight
- civilizatio…
civilizational
12,858 corpus weight
What this shows Long-tail view: where “chloroquine” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | chloroquine |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈklɔː.ɹə(ʊ).kwiːn/ |
| Letters | 11 |
| Frequency rank | #87,139 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “chloroquine” in English
Rare enough to double-check
chloroquine is uncommon English at frequency #87,139 among 5,599 “C” headwords, classed as anoun, transcribed /ˈklɔː.ɹə(ʊ).kwiːn/. Rarity is why readers land here mid-draft. Gloss: "A 4-aminoquinoline drug used to treat and prevent malaria, having the chemical formula C₁₈H₂₆ClN₃.".
chloroquine has no tracked misspelling variants, and the word's spelling is regular enough that our generator found nothing worth flagging. No confusable counterpart is on file for this word, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: From chloro- + -quine (“quinoline derivative”). The correct English form is chloroquine, spelled C-H-L-O-R-O-Q-U-I-N-E.
Definition
- 1A 4-aminoquinoline drug used to treat and prevent malaria, having the chemical formula C₁₈H₂₆ClN₃.
Recorded use
Wiktionary examplesThese source excerpts show how chloroquine appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Drug-Interactions: Several anti-malaria drugs, such as mefloquine, chloroquine and proguanil (not approved for use in US) possess antibacterial activity which may interfere with the immunogenicity of Vivotif.
Perhaps the most egregious example of shifting the standards of evidence comes when the report discusses the off-label use of drugs such as chloroquine and ivermectin.
Etymology
From chloro- + -quine (“quinoline derivative”).
Synonyms
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 "chloroquine", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 11 letters (nearest by frequency rank).