The crossword solution for the term WARMS UP AGAIN is REHEATS, which has seven letters. Reheating is a process of heating food that has already been cooked once before. It is often done to make the food more palatable and to make it easier to eat. Reheating can be done in a variety of ways, such as in the oven, on the stovetop, or in the microwave. Reheating is a common practice in many households, as it allows people to enjoy leftovers from previous meals.