plunk

Sure, the universe of Americans willing to plunk down for an electric sports car is small.

Cash flinched again, wavered, swallowed twice, and got up so abruptly that Lovin Child sat down again with a plunk.

He heard something hum past his head and plunk into the pilot house behind him.

He had lots of plunk; which accounted for Matey's choice of him as a friend among the juniors.

It came flying plunk out through the front window—and it stuck right into a tree like a dagger.

In some hidden spot outside the temple something went plunk.