Plop (verb)

To fall or drop heavily and with a soft, splashing sound.

Origin:

Of onomatopoeic origin.

Examples:

1. The stone plopped into the pond, sending ripples across the surface.
2. The cat plopped down onto the couch, stretching out for a nap.
3. The raindrops plopped against the windows, creating a lulling sound.
4. She plopped the heavy bag onto the floor, relieved to be rid of it.
5. The frog plopped into the water, disappearing beneath the surface.