Meaning of 賑 in Japanese

そこはとても大きくてにぎやかな都市だ。
It's a very big and busy city.

今夜の初日はきっと大にぎわいになりますよ。
I guarantee a huge audience for tonight's premiere.

この町は以前ほどにぎわっていない。
This city is not so busy as it used to be.

政治学とは何か。「セイジ」から、人々は、まず、ジャーナリズムを賑わす政治的事件を連想するでしょう。
What is political science? From the "political," people will probably first associate it with the political incidents that enliven journalism.