invade /ɪnˈveɪd/ verb5 •To enter by force, usually in order to conquer.Argentinian troops invaded the Falkland Islands in 1982. •To move into.Under some circumstances police are allowed to invade a person's privacy. •To attack; to infringe; to encroach on; to violate.The king invaded the rights of the people. •To infest or overrun.The picnic was invaded by ants. •To make an unwelcome or uninvited visit or appearance, usually with an intent to cause trouble or some other unpleasant situation. formsinvaded · invading · invades · invadeth · invadest