响动 (xiǎng dòng) is a compound noun meaning 'sound', 'stir', or 'commotion' — especially a sudden, noticeable, or faint noise that draws attention. The first character 响 means 'to sound' or 'audible', while 动 means 'to move' or 'to stir'; together, they evoke the idea of movement that produces sound — like footsteps, rustling leaves, or an animal shifting in the dark. It often implies a subtle or ambiguous noise whose source isn’t immediately clear.

This word is commonly used in descriptive, literary, or cautious contexts — for instance, when someone hears an unexplained noise at night, or when describing wildlife behavior (e.g., animals making soft sounds before appearing). It carries a slightly literary or formal tone and is more frequent in written Chinese or careful speech than in casual conversation. Unlike the neutral word 声音 (shēngyīn), 响动 suggests immediacy, uncertainty, or even mild tension.