Definition

A flat area of land next to a river that can be covered with water when the river overflows.

Example

The floodplain was covered in water after the heavy rain.

Conversation

I read that the town is planning to build a park on the new floodplain.

Really? That sounds like a great idea, but isn't it risky?

Yeah, but they said they would take precautions against flooding.

I hope it works out well; it could be a nice spot for everyone.

Synonyms & Antonyms

Root Explanation

Floodplain → It is formed from "flood" (from Old English *flōd*, meaning a flowing or stream of water) and "plain" (from Latin *planus*, meaning flat or level). A floodplain is a flat area of land that is prone to flooding, typically adjacent to a river or stream.

Memory Tip

Think of a 'flowing' ('flōd') body of water that can cover a 'flat' ('planus') area — that's what a floodplain is.

Visually Confused Words