Well, honey, bears make a sound that goes something like "grrr" or "roar." But if you're looking for the actual spelling, it's usually written as "grr" or "roar." Just remember, if you ever come face to face with a bear, spelling won't be your biggest concern!
The polar bear makes a 'Growl' sound
The noise a bear makes is typically spelled as "roar" or "growl."
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."