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 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 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.

INTRUDER meaning: 1 : a person who is not welcome or wanted in a place; 2 : a person who enters a place illegally

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.

Nov 7, 2025 · An intruder is someone who enters a property, building, or space without permission or legal right to be there. We’re talking about unauthorized individuals who break into homes, …

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 …

intruder, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

a person who enters a place secretly or illegally: The alarms go off if an intruder enters the house. See -trude-. in•trude /ɪnˈtrud/ v., -trud•ed, -trud•ing.