plop

"The dog's excrement was left on the sidewalk, requiring the owner to clean it up. "

"He clomped heavily up the stairs in his boots."

"The baseball player was hitting the ball hard. "

"The teacher explained the concept loosely, making it hard for the students to understand fully. "

"The leaky faucet in the kitchen was dropping water onto the counter. "

"The smooth surface of the kitchen table was perfect for setting the dinner plates. "

"The ice cube plopped into my glass of lemonade. "

"The children enjoyed the cool lemonade on a hot summer afternoon. "

"The student derived the answer to the math problem from the formula. "

"The baby defecated on the changing mat. "

"My daughter walked along the sidewalk to school this morning. "

"The apple is falling from the tree. "