DictionaryAI

pure

SayPYUUR/ˈpjʊɹ/UK/pjʊə/AUSPYOO-uh/ˈpjʉːə/

13 meanings of pure

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  1. 1
    nothing butadjective
    Being nothing more than what is named; mere; sheer and unmixed with anything else.

    Bumping into my old roommate at a tiny airport in Lisbon was pure chance.

    The supposed memoir turned out to be pure fiction.

    UsageGoes before the noun: pure luck, pure chance, pure nonsense, pure fiction.

    Similarsheer, utter, mere, absolute, complete

  2. 2
    adjective
    Free of foreign material or contaminants; consisting of a single substance.

    Chemists distilled the sample repeatedly until it was chemically pure.

    The jeweler confirmed the bar was pure gold, with no other metals mixed in.

    UsageCompares freely: purer air, the purest water.

    Similarunadulterated, unalloyed, undiluted, uncontaminated

    Oppositeimpure, contaminated, adulterated, mixed

    Note

    Latin pūrus meant "clean, free from dirt, unmixed, plain," and this sense keeps the "unmixed" core most literally. Isaac Watts put it plainly in his Logick: a guinea is pure gold if it holds no alloy. The "plain" strand lives on in the "nothing but" meaning.

    Checked 3 Nov 2026 · 2 facts

  3. 3
    morally cleanadjective
    Morally unblemished; untainted by wicked conduct or qualities.

    The monk strove to keep his thoughts pure and free of envy.

    Her motives were pure; she helped people without expecting anything in return.

    Similarinnocent, virtuous, chaste, wholesome, honorable

    Oppositeimpure, corrupt, sinful, immoral

  4. 4
    adjective
    Said of an animal or plant whose ancestry comes from one breed, strain or line alone, never crossed with another.

    Only pure Arabian horses may be entered in the breed show.

    Growers keep the strain pure by never planting it near other varieties of corn.

    UsageFor animals, purebred is more usual: a purebred Labrador. Growers keep a line pure.

    Similarpurebred, thoroughbred

    Oppositecrossbred, hybrid, mixed

    Note

    Keeping a plant line pure means preventing cross-pollination with other lines, which is why corn growers separate their varieties in the field.

    Checked 2 Nov 2026 · 2 facts

    • Maintaining a plant line's purity involves preventing crossing with other lines. ucanr.edu
    • Corn varieties are separated to avoid cross-pollination. extension.okstate.edu
  5. 5
    unspoiledadjective
    Free of flaws or imperfections; unspoiled and unblemished.

    The diamond was prized for its pure, flawless clarity.

    He admired the pure, unbroken lines of the old wooden boat.

    Similarflawless, perfect, unblemished, immaculate, pristine

    Oppositeflawed, imperfect, blemished

  6. 6
    theoreticaladjective
    Pursued for its own sake or for the sake of knowledge, rather than for practical application.

    He moved from applied engineering into pure research, chasing questions with no immediate payoff.

    Pure mathematics studies abstract structures without concern for whether they describe anything real.

    UsageSet against applied: pure versus applied mathematics, pure research.

    Similartheoretical, abstract, basic, fundamental

    Oppositeapplied, practical

  7. 7
    clear (sound)adjective
    Without harmonics or overtones; clear and free of harshness or discord.

    A struck tuning fork sounds a remarkably pure tone, almost free of overtones.

    The choir blended into a single pure chord that filled the hall.

    Similarclear, clean, true

    Oppositeharsh, discordant, dissonant

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Origin

Latin pūrus ("clean, free from dirt, unmixed, plain") goes back to the Proto-Indo-European root *pewH- ("to cleanse, purify"). It reached Middle English as pure by way of Old French pur. The word pushed aside several native Middle English words, such as lutter, skere, and schir.

Checked 1 Nov 2026 · 4 facts

  • Latin pūrus means clean, free from dirt, unmixed, plain. en.wiktionary.org
  • Latin pūrus derives ultimately from Proto-Indo-European *pewH-, meaning to cleanse or purify. en.wiktionary.org
  • The word entered Middle English as pure through Old French pur, from Latin pūrus. en.wiktionary.org
  • Pure displaced native Middle English words including lutter, skere, and schir. en.wiktionary.org