/ ˈɪnʌndeɪt; NAmE / verb [ vn ] [ usually passive ]
1.
inundate sb (with sth) to give or send sb so many things that they cannot deal with them all
SYN overwhelm , swamp :
We have been inundated with offers of help.
2.
( formal ) to cover an area of land with a large amount of water
SYN flood
► in·un·da·tion / ˌɪnʌnˈdeɪʃn; NAmE / noun [ U , C ]
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WORD ORIGIN
late 16th cent.: (earlier (late Middle English) as inundation ) from Latin inundat- flooded, from the verb inundare , from in- into, upon + undare to flow (from unda a wave).