A shady deal is an illegal or unethical transaction that involves deception or fraud. The term 'shady deal' can be used to describe a variety of activities, such as money laundering, bribery, and embezzlement. In this crossword, the solution for the term 'shady deal' is SCAM, which is an acronym for 'Swindle, Cheat, and Misrepresent'. A SCAM is a fraudulent scheme designed to take advantage of unsuspecting victims by promising them something of value in exchange for money or other goods.