Meanings
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1
adj
Not clean; covered with dirt or marks.
Take off those dirty shoes before you come inside.
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2
adj
Rude or offensive, especially about sex.
He kept telling dirty jokes at the party.
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3
adj
Unfair, dishonest, or against the rules.
He won the match by playing a dirty trick.
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4
adj
Showing anger or dislike.
She gave me a dirty look when I interrupted her.
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Etymology
From Middle English dirti, alteration of earlier dritti, equivalent to dirt + -y. Cognate with Middle Low German drēterich (“dirty”). See also drite.
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