无限 (wú xiàn) literally means 'without limit' — 无 (wú) means 'not' or 'without', and 限 (xiàn) means 'limit' or 'boundary'. Together, they form an adjective meaning 'unlimited', 'boundless', or 'infinite'. It describes something with no restriction in quantity, duration, scope, or degree.

This word is commonly used in both formal and informal contexts — from scientific or philosophical discussions (e.g., infinite space) to everyday expressions (e.g., unlimited data plans or endless patience). While it can modify nouns directly (e.g., 无限可能), it’s often used predicatively after 是 or 很. It carries a neutral-to-positive connotation, emphasizing abundance or openness rather than scarcity or constraint.