overwhelm

v. t.

  1. 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.
  2. To project or impend over threateningly.
  3. To cause to surround, to cover.

n.

  1. The act of overwhelming.