Quinine

/kwɪˈniːn/ noun, verb

noun, verb ·Rare ·Advanced level

Meaning at a glance

  • Primary sense: An alkaloid with the chemical formula C₂₀H₂₄N₂O₂, originally derived from cinchona bark (from plants of the genus Cinchona), used to treat malaria and as an ingredient of tonic water, which presents as a bitter colourless powder; also, a drug containing quinine or a chemical compound derived from it.
  • Grammar: quinine is listed as noun, verb.
  • Nearest alternatives: antimalarial alkaloid, bark alkaloid, bitter alkaloid, cinchona alkaloid.
  • Useful contrasts: cinchonine, inactive treatment, placebo.
  • Usage evidence: Gin and tonic was the favored drink of British colonials due to its antimalarial quinine content.

How to use "quinine"

  1. Start with the primary definition, then check the part of speech before placing the word in a sentence.
  2. Compare nearby synonyms to make sure "quinine" carries the exact meaning, tone, and strength you need.
  3. Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.

Meaning check

  • Does the word fit the sentence's grammar?
  • Does it match the intended tone rather than only the dictionary definition?
  • Would a simpler synonym be clearer for the reader?
  • Is there enough surrounding context to prevent ambiguity?

Source and review context

This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "quinine" in a final draft.

If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.

Before you rely on this definition

Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "quinine" as the right word for your sentence.

If your draft is formal, technical, persuasive, or sensitive, compare "quinine" with a nearby alternative so the final choice matches both meaning and reader expectation.

Compare nearby meanings

  • Use synonyms when you need a softer, stronger, simpler, or more specific word.
  • Use antonyms to check the boundary of the meaning and avoid accidental contrast.
  • Use the example sentence to confirm the word behaves naturally in context.
  • Keep the original wording when a replacement adds complexity without improving precision.

Definition decision workflow

1. Identify the role

Check whether "quinine" is acting as noun, verb in your sentence. A definition is only useful when the grammar matches the way the word is being used.

2. Test the nearest option

Compare it with "antimalarial alkaloid" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.

3. Confirm with context

Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.

Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.

Final meaning check

Before publishing a sentence with "quinine", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.

When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.

Definitions

Noun
  1. 1
    An alkaloid with the chemical formula C₂₀H₂₄N₂O₂, originally derived from cinchona bark (from plants of the genus Cinchona), used to treat malaria and as an ingredient of tonic water, which presents as a bitter colourless powder; also, a drug containing quinine or a chemical compound derived from it. countable, uncountable

    "The alkali of yellow bark may be distinguished from cinchonine by the name of quinine."

  2. 2
    a bitter alkaloid extracted from chinchona bark; used in malaria therapy wordnet
Verb
  1. 1
    To treat (someone) with quinine. archaic, transitive

Synonyms

All synonyms
antimalarial alkaloidbark alkaloidbitter alkaloidcinchona alkaloidcinchonine related alkaloiddrug

Antonyms

cinchonineinactive treatmentplacebosynthetic quinine

Example

"Gin and tonic was the favored drink of British colonials due to its antimalarial quinine content."

Common questions

What does "quinine" mean?

An alkaloid with the chemical formula C₂₀H₂₄N₂O₂, originally derived from cinchona bark (from plants of the genus Cinchona), used to treat malaria and as an ingredient of tonic water, which presents as a bitter colourless powder; also, a drug containing quinine or a chemical compound derived from it.

What is a synonym for "quinine"?

Common synonyms include: antimalarial alkaloid, bark alkaloid, bitter alkaloid, cinchona alkaloid, cinchonine related alkaloid, drug.

How do you use "quinine" in a sentence?

Gin and tonic was the favored drink of British colonials due to its antimalarial quinine content.

How do you pronounce "quinine"?

Pronounced /kwɪˈniːn/.

Etymology

The noun is either: * derived from Spanish quina (“quinine”) (a clipping of quinaquina (“Cinchona bark”)) + English -ine (suffix forming names of chemical substances, especially (among others) alkaloidal substances); or * borrowed from French quinine, from quin(quina) (“Cinchona bark”) + -ine (feminine form of -in (suffix forming nouns)). Spanish quinaquina and French quinquina are both derived from Quechua kina-kina, a reduplication of kina (“bark; (specifically) Cinchona bark”). The verb is derived from the noun.

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