noisy
閙 centers on noise and commotion, especially the kind of loud, bustling activity that fills a space like a marketplace.
閙 is a variant form of 鬧, combining 門 (gate) with 市 (market), suggesting the noisy bustle of a marketplace at the gate. The exact historical development is uncertain, but the component combination is consistent with the meaning.
Picture a busy market (市) crammed inside a gate (門): the noise of vendors and shoppers spills out, making 閙 a noisy scene.
For ドウ, imagine the loud 'dough' of a baker shouting over the market noise: dough -> ドウ, and the market inside the gate is noisy.