An intruder is someone who enters a place or situation despite not being invited. If a Girl Scout comes to your door to sell you cookies but ends up trying to watch TV with you, you can call her an intruder.

Feb 19, 2026 · Turn out the lights, be as quiet as possible, and call emergency services. Do not leave your room until the police arrive. If you come face-to-face with an intruder, stay calm and cooperate …

INTRUDER definition: 1. someone who is in a place or situation where they are not wanted: 2. someone who enters a place…. Learn more.

The meaning of INTRUDER is one that intrudes; specifically : a military aircraft assigned to penetrate alone into enemy territory usually at night. How to use intruder in a sentence.

intruder (ɪnˈtruːdə) n a person who enters a building, grounds, etc, without permission

An intruder is a person who enters a place without permission. Windows and lighting help homeowners see intruders.

Definition of intruder from the Oxford Advanced Learner's Dictionary. a person who enters a building or an area illegally. The intruder fired at least one more shot at the guard and then fled. Intruder alarms …

Synonyms for INTRUDER: spy, interloper, interferer, gossiper, meddler, informant, busybody, intermeddler, informer, betrayer

INTRUDER meaning: 1. someone who is in a place or situation where they are not wanted: 2. someone who enters a place…. Learn more.

An intruder is a person who enters a place without permission. Windows and lighting help homeowners see intruders.