Open English Wordnet
Verbs
(v)invade, occupymarch aggressively into another's territory by military force for the purposes of conquest and occupation“Hitler invaded Poland on September 1, 1939” (v)invade, overrun, infestoccupy in large numbers or live on a host“the Kudzu plant infests much of the South and is spreading to the North” (v)invadepenetrate or assault, in a harmful or injurious way“The cancer had invaded her lungs”