Definitions:

1. march aggressively into another's territory by military force for the purposes of conquest and occupation verb
   • Hitler invaded Poland on September 1, 1939
2. penetrate or assault, in a harmful or injurious way verb
   • The virus invaded the patient's lungs.
3. to intrude upon, infringe, encroach on, violate verb
   • This new colleague invades my territory

Synonyms:

• encroach upon
• intrude on
• obtrude upon
• occupy
• overrun

NearBy Words:

• invader