聒 (guō): raucous

Meanings

Chánshēng guō ěr, ràng rén nányǐ rùshuì.

The cicadas' din grates on the ears, making it hard to sleep.

Háizimen guōzào le yī zhěng tiān.

The children were noisy and clamorous all day.

memory

聒 = 耳 (ear) + 舌 (tongue). A tongue rattling at your ears — that's noise that won't shut up.

register

Bound morpheme — you'll see it almost exclusively in compounds: 聒噪 (guōzào, 'noisy / clamorous'), 聒耳 (guō'ěr, 'grating on the ears').

聒 guō