godan verb (-ku), intransitive verb
Describes a repeated, noisy, metallic or hard-object clattering sound, often from loose parts or objects being knocked together.
風で窓枠ががちゃついている。
The window frame is rattling in the wind.
引き出しの中でスプーンががちゃつく。
The spoons are clattering around in the drawer.
godan verb (-ku), intransitive verb
make a ruckus; create a noisy disturbance
Used for a noisy, chaotic situation or commotion, often involving people or objects making a racket. Less common than the physical clattering sense.
隣の部屋で子供たちががちゃついている。
The kids are making a ruckus in the next room.