plop

nouns

the noise of a rounded object dropping into a liquid without a splash

plop

is a type of (narrower)

sound of any kind (especially unintelligible or dissonant sound)

"he enjoyed the street noises"; "they heard indistinct noises of people talking"; "during the firework display that ended the gala the noise reached 98 decibels"

noise

verbs

drop something with a plopping sound

plop

is a type of (narrower)

let fall to the ground

"Don't drop the dishes"

drop

drop with the sound of something falling into water

plop

is a type of (narrower)

move downward and lower, but not necessarily all the way

"The temperature is going down"; "The barometer is falling"; "The curtain fell on the diva"; "Her hand went up and then fell again"

come down, descend, fall, go down

set (something or oneself) down with or as if with a noise

"He planked the money on the table"; "He planked himself into the sofa"

flump, plank, plonk, plop, plump, plump down, plunk, plunk down

adverbs

with a short hollow thud

"plop came the ball down to the corner of the green"

plop, plunk