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bad apple

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noun Informal.
a discontented, troublemaking, or dishonest person: In any group of average citizens there are bound to be a few bad apples.
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Origin of bad apple

From the proverb “one bad apple spoils the barrel”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use bad apple in a sentence

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