A hullabaloo is a loud, chaotic uproar or commotion, usually caused by people being excited, upset, or arguing about something. When there's a hullabaloo in the cafeteria, you hear shouting, chairs scraping, and general mayhem. When neighbors create a hullabaloo over a new town rule, they're making a big, noisy fuss about it.

The word suggests more than ordinary noise: it captures confusion and excitement mixed together. You might hear a hullabaloo break out when a famous author visits your school, with students crowding around and everyone talking at once. Or imagine the hullabaloo in a theater when someone spots a mouse scurrying across the floor.

Sometimes people create a hullabaloo over something that doesn't really deserve all that fuss and attention. If your family makes a huge hullabaloo about whether to have pizza or tacos for dinner, they're treating a small decision like a major crisis. The word suggests that all the noise and excitement might be a bit overdone for the situation.

Hullabaloo is what happens when enthusiasm, confusion, or disagreement gets so noisy that it's almost funny.