noun

an overflow of a large amount of water beyond its normal limits, especially over what is normally dry land.

the villagers had been cut off by floods and landslides

inundation,swamping,deluge,torrent,overflow,flash flood,freshet,downpour,cloudburst,spate

verb

cover or submerge (an area) with water in a flood.

the dam burst, flooding a small town

inundate,swamp,deluge,immerse,submerge,drown,engulf