Examples from contributors:
Spuuushh
ffftt
shh-shh-shh
No, that is not how you spell it.It is called a whoopee cushion, not a whoop cushion.
The sound a horse makes is a neigh.The verb tenses are:neighneighedneighingA horse can also whinny.
The spelling of the sound a baby makes when crying is "waaaah". Some babies might also be yelling "maaaaaaaa maaaaaaaa", as if they are asking for their mother.
A howling sound
The word is spelled onomatopoeia. An onomatopoeia is a word that sounds like what it is describing. A good example of this is the word quack. The sound that a duck makes is "Quack." The word sounds like the sound it is describing.
The sound a flute makes is typically spelled as "whistle" or "flutey."
rowr!
The sound a penguin makes is typically spelled "hok hok" or "bray."
Varooooom
The sound a buzzer makes when the answer is wrong is typically spelled as "bzzz" or "buzz."
The sound a goat makes is typically spelled "maa" or "bleat."
Ka-ching!
Unnh!
vroom
The typical written expression for a yawn sound is "ho hum."
The sound a rooster makes is typically spelled as "cock-a-doodle-doo."
The sound your throat makes when clearing it is spelled "ahem."