The term 'prevail upon' can be broken down into four crossword solutions: COAX, GET, INDUCE, and URGE. To 'prevail upon' someone is to use persuasion or influence to convince them to do something. Coaxing is a gentle form of persuasion, while getting someone to do something implies more direct action. Inducing someone to do something is to lead them to it by providing incentives or rewards. Urging someone to do something is to strongly encourage them to take action. All of these words together describe the act of prevailing upon someone, which is to use various forms of persuasion to GET them to do something.