悠扬 (yōu yáng) is an adjective describing sounds that are both melodious and lingering—gentle, flowing, and emotionally resonant, often evoking a sense of calm or nostalgia. The first character 悠 (yōu) means 'prolonged', 'leisurely', or 'distant', suggesting duration and spaciousness; the second character 扬 (yáng) means 'to rise', 'to float upward', or 'to spread', implying brightness and resonance. Together, they paint an auditory image of sound that rises gracefully and lingers in the air, like wind chimes on a quiet breeze or a flute melody drifting across hills.

This word is commonly used to describe musical tones, singing voices, bells, birdcalls, or even recited poetry—always with a poetic, refined, and slightly literary flavor. It rarely appears in casual speech but frequently appears in descriptive writing, song lyrics, and cultural commentary. While it can technically modify nouns directly (e.g., 悠扬的歌声), it’s most evocative when paired with natural or traditional sound sources, reinforcing a sense of harmony and timelessness.