- To cover over completely, as by a great wave; to
overflow and bury beneath; to ingulf; hence, figuratively, to immerse
and bear down; to overpower; to crush; to bury; to oppress, etc.,
overpoweringly. - To project or impend over threateningly. - To cause to surround, to cover.
Meaning of 'overwhelm' (Princeton's WordNet)
1 . overwhelm
[ v]
Meaning (1): - cover completely or make imperceptible