The crossword solution for the term 'successfully solicit, with 'UP'' is DRUM. This term is used to describe the process of actively seeking out potential customers or clients in order to promote a product or service. It is often done through cold-calling, emailing, or other forms of direct contact. The term 'UP' is used to indicate that the solicitation is done in an aggressive manner, with the goal of getting a positive response from the customer.