喧哗 (xuān huá) is a disyllabic noun meaning 'clamor' or 'uproar' — a loud, chaotic, and often disruptive noise made by many people or things. The first character 喧 (xuān) means 'noisy' or 'boisterous', emphasizing volume and agitation; the second character 哗 (huá) reinforces this idea, carrying connotations of loud, jarring sound — like shouting, clamoring, or commotion. Together, they form a compound that stresses both intensity and disorder in sound.

This word is commonly used to describe undesirable noise in public or shared spaces: crowded markets, unruly classrooms, or rowdy gatherings. It carries a mildly negative tone, implying the noise is excessive or inappropriate for the setting. While it can refer to literal sound, it’s rarely used for natural phenomena (e.g., wind or waves) — it’s strongly associated with human-generated disturbance. In formal contexts, it may appear in rules or announcements warning against causing disturbance (e.g., '请勿喧哗').