A hubbub is a noisy confusion of voices and sounds, a chaotic mixture of talking, shouting, and commotion all happening at once. Picture the cafeteria at lunch when everyone's trying to talk over everyone else, chairs are scraping, trays are clattering, and you can barely hear your friend sitting right next to you. That overwhelming noise and confusion is a hubbub.

The word perfectly captures that moment when a quiet classroom erupts into chaos after the teacher steps out, or when a crowd of people all start talking excitedly at the same time. A hubbub is both loud and messy, with many different sounds competing for attention in a disorganized jumble.

You might hear about a hubbub in the hallways between classes, or the hubbub of a busy marketplace where vendors call out and shoppers bargain. Sometimes people create a hubbub over news or rumors, meaning they generate lots of excited or confused discussion. When things finally settle down, someone might say “What was all that hubbub about?” They're asking what caused all the noise and confusion in the first place.