be careful, because impure motor oil can damage your car's engine
Victorian notions of what qualified as impure art now strike us as laughable.
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Farmers or middlemen also frequently adulterated milk, watering it down to stretch supplies—with impure water likely to introduce further pathogens—or adding toxic substances, like formaldehyde or chalk, meant to conceal spoilage or make milk appear whiter.— Made By History, Time, 29 Apr. 2025 What was considered holy at one time was considered impure in other epochs.—Isaac Bashevis Singer, Harpers Magazine, 26 Mar. 2025 In any case, playing Bach on a concert grand is an inherently impure act; Bach knew of no such instrument.—Alex Ross, The New Yorker, 10 Mar. 2025 In any case, playing Bach on a concert grand is an inherently impure act; Bach knew of no such instrument.—Alex Ross, The New Yorker, 10 Mar. 2025 See All Example Sentences for impure
Word History
Etymology
Middle English, from Middle French & Latin; Middle French, from Latin impurus, from in- + purus pure
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