To be crowded with people; to be bustling or lively (intransitive).
週末にはあの通りがいつも賑わう。
That street is always bustling on weekends.
夏祭りで町中が賑わっていた。
The whole town was lively because of the summer festival.
新しい店ができて商店街が賑わい始めた。
A new shop opened and the shopping street began to get busy.
To prosper or flourish; to do thriving business (shops or activities becoming busy).
観光客が増えて町の経済が賑わっている。
With more tourists, the town's economy is flourishing.
イベントのおかげで商店は賑わいを取り戻した。
Thanks to the event, the shops regained their bustle.
この地区は再開発で賑わうようになった。
This area became prosperous after redevelopment.