够用 is an adjective meaning 'sufficient for use' or 'enough for the purpose.' It combines 够 (gòu), meaning 'enough' or 'sufficient,' and 用 (yòng), meaning 'to use' or 'for use.' Together, they express that something meets a practical need without excess — neither too little nor unnecessarily abundant. The phrase emphasizes functional adequacy rather than abundance or luxury.

够用 is commonly used in everyday contexts involving resources, time, money, food, space, or tools — for example, when assessing whether supplies are adequate for a task or whether a quantity satisfies a requirement. It often appears in spoken Chinese and informal writing, and typically follows the subject it describes (e.g., 这些材料够用了). It can also function predicatively with 是…的 or as a standalone response (e.g., 够用了！), conveying relief or finality.