If someone does something rumbustiously, they do it in a very noisy, energetic, and maybe even a little bit wild way.
Rumbustiously can make people think of fun and excitement, but it can also be a little bit too much for some people.
Examples:
The children were playing rumbustiously in the yard.
She laughed rumbustiously at the funny joke.
The dog ran rumbustiously around the park.
The party guests danced rumbustiously to the music.
The clown rumbustiously juggled the balls and made everyone laugh.
The wind blew rumbustiously through the trees, making them sway and creak.