The crossword solution for the term 'CHANGE, LIKE A LOCK' is REKEY, which is a five-letter word. Rekeying is a process of changing the pins and springs in a lock cylinder so that a different key can be used to operate it. This process is often used when a lock needs to be changed due to a lost or stolen key, or when a new tenant moves into a rental property. Rekeying is a cost-effective alternative to replacing the entire lock.