The crossword solution for the term USEFUL SKILL is ASSET. An ASSET is something that is valuable and can be used to increase a person's wealth or improve their life. It can refer to a tangible item such as money, property, or equipment, or it can refer to an intangible skill or knowledge that can be used to benefit someone. In this case, the term 'USEFUL SKILL' is referring to an intangible ASSET, such as a skill or knowledge that can be used to benefit someone.