Definition: march aggressively into another's territory by military force for the purposes of conquest and occupation
Usage: Hitler invaded Poland on September 1, 1939
Definition: launch an attack or assault on; begin hostilities or start warfare with
Usage: Hitler attacked Poland on September 1, 1939 and started World War II; Serbian forces assailed Bosnian towns all week
Synonyms: invade
Definition: penetrate or assault, in a harmful or injurious way
Usage: The cancer had invaded her lungs
Similar words: interpenetrate, permeate
Definition: penetrate mutually or be interlocked
Usage: The territories of two married people interpenetrate a lot
Synonyms: obtrude upon, intrude on, invade, encroach upon
Definition: to intrude upon, infringe, encroach on, violate
Usage: This new colleague invades my territory; The neighbors intrude on your privacy
Similar words: move into, get in, get into, go in, go into, enter, come in
Definition: to come or go into
Usage: the boat entered an area of shallow marshes
Synonyms: infest, invade, overrun
Definition: occupy in large numbers or live on a host
Usage: the Kudzu plant infests much of the South and is spreading to the North