Intruder

Definitions

A person who enters a building or area without permission or legal right.

Someone who puts themselves into a situation or place where they are unwelcome or uninvited.

Examples

The security alarm sounded as soon as the intruder stepped onto the property.

She felt like an intruder in her own home after her estranged relatives moved in uninvited.

Synonyms

Trespasser Invader Infiltrator Interloper Burglar Uninvited guest

Antonyms

Guest Invited visitor Welcome person Inhabitant Resident Occupant