Aclatter

I hear the hoofs a-clatter.

Source: wiktionary

It ain’t an easy job, directing traffic at ’Yde Park Corner. Buses and ’ansom cabs. All a-clatter on the cobbles.

Source: wiktionary

The Biarritz [Hotel in San Sebastián] is always remembered by us for its beguilingly venerable lobby aclatter with no less than 82 clocks whose ticks, tocks, cuckoos, roosters, and chimes will keep your ears buzzing until you’ll wish tempus wouldn’t fugit.

Source: wiktionary

Her long, black hair in four braids, snaking around her head, pink plastic barrettes aclatter, she flew across the park […]

Source: wiktionary