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English definition of “dirty”

dirty

adjective (NOT HONEST)    /ˈdɜː.ti/ US  /ˈdɝː.t̬i/ informal
unfair, dishonest, or unkind: She played a dirty trick on me by telling me Diane was having a party when she wasn't. The airline admitted being involved in a dirty tricks campaign to win customers from their rival. That's a dirty lie!Dishonest
(Definition of dirty adjective (NOT HONEST) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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