泛滥 (fàn làn): to overflow; to inundate; to flood; (fig.) to proliferate unchecked; variant of 氾濫|泛滥[fan4 lan4]

There was especially a lot of rain this summer, and the river overflowed, flooding the farmland along the banks.

Recently, false information has been overflowing on the internet, and many people have been deceived; everyone must be more vigilant.

Due to a lack of management, small vendors at this tourist attraction have become rampant, seriously affecting the visitors' experience.

If rumors are allowed to spread unchecked, social order will be threatened.

This river overflows every rainy season, so the government decided to build dikes to prevent flooding.

In this small town, stray dogs are running rampant, and residents are afraid to go out alone at night.