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Definition of intruder

intruder

/ɪnˈtruːdər/
in · tru · der
Adverb:intrusively
•
Plural:intruders
•
Adjective:intrusive
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intruder Lexical Profile

intruder Game Scores & Validity

• noun

1

A person who enters a building, property, or restricted area without permission or invitation, often with criminal intent.

Example

"The security system alerted the homeowners that an intruder had climbed over the back fence."

2

A person or thing that comes into a situation, group, or environment where they are not wanted or do not belong.

Example

"Sitting quietly in the corner of the private family gathering, he felt like an awkward intruder."

Synonyms
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Antonyms
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• Rhymes for intruder

• Nearby Words

introvert
introverted
intrude
intruder
intrusion
intrusive
intrusively

Word Origin & Etymology

Formed in the mid-16th century from the verb 'intrude' (from Latin 'intrudere', meaning 'to thrust in', from 'in-' meaning 'into' and 'trudere' meaning 'to thrust') plus the agent suffix '-er'.

Cite this Entry

Wordmom. (2026). Definition of Intruder. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/intruder
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