Japanese Onomatopoeia Dictionary – All Words | onowords – Japanese Sound Expressions

peko-peko（ペコペコ）
Gitaigo（擬態語）★★★☆☆Physical Movement / Sound

1. Being extremely hungry

pika-pika（ピカピカ）
Giongo（擬音語）, Gitaigo（擬態語）★★★☆☆Physical Movement / Sound

1. Shining or sparkling brightly

pata-pata（パタパタ）
Giongo（擬音語）★★☆☆☆Physical Movement / Sound

pata-pata describes light, rapid, and repetitive sounds or movements.