godan verb (-ku), intransitive verb
be noisy; be astir; rustle; murmur
Describes a low, continuous, indistinct sound made by a group of people talking, leaves rustling, or a crowd stirring restlessly. Often used for background noise in a room, hallway, or outdoor setting.
教室の中がざわめいている。
The classroom is buzzing with noise.
風で木の葉がざわめく音が聞こえる。
I can hear the rustling of leaves in the wind.