kerplunk, splash
They watched the horse clip-clop down the cobblestone road. In the distance, she heard the taka-taka-taka-taka of gunfire.
Any word that imitates a sound such as snap, le or popDefinition: the formation of a word, as cuckoo or boom, by imitation of a sound made by or associated with its referent.
The cat meowed to his owner for something to eat. Meowed is a onomatopoeia.
Boom! Pow! Smack! Bzz!
murmurs, splash, meow, yawwn, bing!