dalevereli is

listen to the pronunciation of dalevereli is
التركية - الإنجليزية
(deyim) sharp practice
Commercial activity that is possibly dishonest while not actually being illegal

If this is not actually illegal, it certainly appears to be a sharp practice.

disapproval You can use sharp practice to refer to an action or a way of behaving, especially in business or professional matters, that you think is clever but dishonest. He accused some solicitors of sharp practice
dubious business, questionable business
dalevereli is
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