1700-1800 Perhaps from hello + Scottish Englishballoo a word used to make children keep quiet
Examples
EXAMPLES FROM OTHER DICTIONARIES
There's been a huge hullabaloo over Collins' new book.
EXAMPLES FROM THE CORPUS
How could a child as well cared for as that vanish from her ordinary life without some one raising a hullabaloo?
In almost no time at all, blame for the resultant hullabaloo was laid at my feet.
In the hullabaloo, he creeps away from the row of houses, silhouetted against the night sky.
Once a stag caused a great hullabaloo by breaking from cover and bounding away noisily.
Remember all the hullabaloo over the golf ball with the transmitter inside it.
We would have come together when his hullabaloo was over.
1excited talk, newspaper stories etc, especially when something surprising or shocking is happeningSYN fuss: There was a huge hullabaloo when the book was first published.2a lot of noise, especially made by people shoutingSYN commotion: She looked up to see what all the hullabaloo was about.