a loud noise, especially caused by a lot of people all talking at the same time

I could hardly hear myself speak above all the hubbub in the bar. 在喧嚷的酒吧间里，我几乎听不见自己的声音。

general excitement and activity

Once the hubbub of the election had died down, it was back to normal for the president. 一旦选举之事尘埃落定，对于总统来说一切就恢复正常了。