Sure bets are investments that are almost guaranteed to yield a return. They are considered to be low risk and are often used by investors who want to minimize their losses. The term 'SURE bets' can be broken down into two words: 'locks' (5 letters) and 'SURE' (4 letters). Locks are security devices that are designed to prevent unauthorized access, while SURE is an adjective meaning certain or definite. Together, these two words form the phrase 'SURE bets, ' which refers to investments that are almost certain to yield a return.