piyo-piyo（ピヨピヨ）
piyo-piyo describes the high-pitched chirping sound made by small birds, especially chicks.
poko-n（ポコン）
poko-n describes a light popping or plopping sound made by a small, firm object with gentle force.
poko（ポコ）
poko describes a small bump, bulge, or protrusion that appears lightly and without force.
poko-poko（ポコポコ）
poko-poko describes a series of small, hollow bubbling or popping sounds produced when air or gas rises repeatedly through liquid, or when a light, hollow object is tapped in a gentle, rhythmic way.
pachi（パチ）
pachi describes a short, bright snapping or popping sound produced when something lightly bursts, snaps, or makes a crisp spark-like noise.
pachi-pachi（パチパチ）
pachi-pachi describes short, sharp, repeating popping sounds such as light clapping, small sparks, or gentle crackling.
bota-bota（ボタボタ）
bota-bota describes the sound or state of heavy drops of liquid falling one after another, usually in a slow but weighty rhythm.
pota-pota（ポタポタ）
pota-pota describes small drops of liquid falling one by one in a slow, steady rhythm.
doro-doro（ドロドロ）
doro-doro describes a thick, heavy, and viscous state, often referring to substances with low fluidity that move slowly, like mud or magma, as well as emotions or relationships that feel dense or entangled.
biri-biri（ビリビリ）
1. Continuous electric stimulation or tingling