noun B2 Upper-Intermediate Uncommon

intruder

ihn-TROO-duh

Intruder (noun) means a person who enters a place without permission. Example: “The alarm went off the moment the intruder opened the window.”

noun

A person who enters a place without permission.

"The alarm went off the moment the intruder opened the window."

"Police were called after neighbours spotted an intruder in the yard."

How to Use Intruder

Learner’s notes

In plain EnglishSomeone who breaks in or shows up uninvited, often with bad intent.

Common pairings

spot an intruder catch an intruder armed intruder

Word Forms

intruders plural

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Fill the Gap

Can you complete this real example?

The alarm went off the moment the _____ opened the window.

Etymology

From intrude + -er.

Synonyms

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interloper trespasser

Related Words

stranger interloper trespasser

Rhymes for intruder

lauder Louder marauder

See all rhymes for intruder →

Frequently Asked Questions

What does “intruder” mean?

The word “intruder” means a person who enters a place without permission. In plain terms, someone who breaks in or shows up uninvited, often with bad intent.

How do you pronounce “intruder”?

“Intruder” is pronounced ihn-TROO-duh (/ənˈtɹudɚ/ in IPA).

How do you use “intruder” in a sentence?

Here is “intruder” used in a sentence: “The alarm went off the moment the intruder opened the window.”

What part of speech is “intruder”?

“Intruder” is a noun.

Is “intruder” a common word?

“Intruder” is an uncommon word in modern English, usually learned at around the B2 level.

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