がやがや
gayagaya

Suru Verb
To-Adverb

1. noisily (crowd of people talking); clamorously; in a hubbub; jabberingly; chatteringly; buzzingly

Onomatopoeia
To-Adverb

2. loudly (laughing)

Archaic
Onomatopoeia
Applies to かやかやカヤカヤ
Other forms: