Meaning & use
intruder
A person who enters a place without permission or invitation, often with hostile or unlawful intent.
See it in a sentence
The alarm went off the moment the intruder opened the back door.
Security cameras caught an intruder climbing over the fence at midnight.
A note on using this word
Often paired with 'detect,' 'catch,' or 'alert' in security contexts.
Words with a similar meaning
trespasserinvader
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
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