The term INVEST WITH POWER can be broken down into two crossword solutions: ENTHRONE (8 letters) and ENDUE (5 letters). ENTHRONE means to crown or install a monarch, while ENDUE means to endow with a quality or ability. Together, these two words suggest that someone has been given the power to invest, likely in the form of a financial investment. This could refer to a person being appointed to a position of authority in a company or organization, or it could refer to someone being granted the authority to make decisions about investments.