invade

verb

• (of an armed force) enter (a country or region) so as to subjugate or occupy it:during the Second World War the island was invaded by the Axis powers
• enter (a place, situation, or sphere of activity) in large numbers, especially with intrusive effect:demonstrators invaded the Presidential Palace
• (of a parasite or disease) spread into (an organism or bodily part): sometimes the worms invade the central nervous system
• encroach or intrude on:he felt his privacy was being invaded