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white hat

noun

Definition of white hat

  1. 1 :  one who is admirable and honorable

  2. 2 :  a mark or symbol of goodness <could use a few more guys in white hats — Robert Christgau>



Origin and Etymology of white hat

from the white hats stereotypically worn by law-abiding characters in movie westerns


First Known Use: 1970


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to lessen in amount, effect, or force

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