Meaning of うらこうさく in Japanese

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Definition of うらこうさく

うらこうさく(urakousaku) 【裏工作】

(n) dodgy dealings; monkey business
彼らが最終契約について協議している際、ある裏工作が進んでいた。賄賂が渡されたのだ。
There was some monkey business going on when they were negotiating that last contract; money passed under the table.