The word 无瑕 (wúxiá) is a compound formed by combining the negation prefix 无 (wú), meaning "without" or "lacking," with the noun 瑕 (xiá), which originally refers to a flaw or blemish in jade. Structurally, it follows a common "negation + noun" pattern in Chinese to create an adjective meaning "free from the stated flaw." Semantically, it moves from the literal meaning of "flawless (jade)" to a broad metaphorical sense of "perfect, immaculate, or spotless," applicable to objects, character, reputation, or beauty. Thus, its formation exemplifies how Chinese often creates abstract adjectives by negating a concrete noun with specific cultural connotations.