intruder

Example:The former soldier became a vigilante and ended up harming the invader instead.

Definition:A person who attacks and tries to take control of a place or country.

Example:The trespasser was asked to leave but kept coming back to camp in the woods.

Definition:A person who enters a place without permission, especially an area or a building.

Example:It was a surprise for everyone when the interloper joined the meeting.

Definition:A person who appears in a place or situation without being wanted or expected.

Example:The infringer was eventually caught and faced legal consequences.

Definition:A person who infringes or violates the rights or privileges of another.