WordRel.com

• march aggressively into another's territory by military force for the purposes of conquest and occupation

  synonym	occupy
  derivation	invaderinvasioninvasive
  other	invaderinvasion
  hypernym	assailattack
  hyponym	infestoverrun

• penetrate or assault, in a harmful or injurious way

  derivation	invasioninvasive
  other	invasion
  hypernym	interpenetratepermeate

• to intrude upon, infringe, encroach on, violate

  synonym	encroach uponintrude onobtrude upon
  derivation	invaderinvasioninvasive
  other	invaderinvasion
  hypernym	come inenterget inget intogo ingo intomove into
  hyponym	foray intoraid

• occupy in large numbers or live on a host

  synonym	infestoverrun
  derivation	invasion
  other	invasion
  hypernym	inhabit