The term 'HOST A ROAST, SAY' can be solved by the five-letter word 'EMCEE'. An EMCEE is a person who acts as a master of ceremonies at an event or gathering. They are responsible for introducing speakers, keeping the event running smoothly, and engaging with the audience. Hosting a roast is a type of event where people make humorous and often insulting remarks about a particular person. An EMCEE is essential to ensure that the roast runs smoothly and that everyone has a good time.