kopo-kopo
Soft, gentle bubbling sound of water—a small spring, water percolating through rocks, or a gentle stream over stones.
💡Used for natural springs, coffee percolating, water bubbling through rocks, or gentle underwater springs.
岩の間からこぽこぽと清水が湧いていた。
Clear water was gently bubbling up from between the rocks.
The natural spring ___ bubbled up from the ground.
天然の泉が地面から___と湧き出ていた。