The term 'CASH IN' can be broken down into four crossword solutions: DIE (3 letters), SELL (4 letters), REDEEM (6 letters), and DECEASE (7 letters). To 'cash in' means to exchange something of value for money. In this case, the term is used to describe the act of exchanging a life insurance policy for its cash value. To 'DIE' is to cease living, while to 'SELL' is to exchange goods or services for money. To 'REDEEM' is to exchange something for money, usually after having paid a debt. Finally, to 'DECEASE' is to DIE or pass away.