The term FOAM-FILLED can be summarized with the crossword solution SUDSY, which is an adjective meaning full of bubbles or lather. It is often used to describe a liquid that has been mixed with soap or detergent. Foam-filled items are usually filled with a material that is light and airy, such as foam rubber or polystyrene beads. This type of material is often used in furniture, bedding, and other items to provide cushioning and insulation.