obtruder

noun obtruder

• meddles — Third-person singular simple present indicative form of meddle.
• intruder — to thrust or bring in without invitation, permission, or welcome.
• trespasser — Law. an unlawful act causing injury to the person, property, or rights of another, committed with force or violence, actual or implied. a wrongful entry upon the lands of another. the action to recover damages for such an injury.
• alien — Alien means belonging to a different country, race, or group, usually one you do not like or are frightened of.
• busybody — If you refer to someone as a busybody, you are criticizing the way they interfere in other people's affairs.