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Definition of intrusion

intrusion

/ɪnˈtruː.ʒən/
in · tru · sion
Adverb:intrusively
•
Plural:intrusions
•
Adjective:intrusive
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intrusion Lexical Profile

intrusion Game Scores & Validity

• noun

1

The action of intruding or forcing oneself in without invitation, permission, or welcome.

Example

"The celebrity complained about the constant intrusion of photographers into her private life."

2

The forcing of molten rock into an earlier rock formation, or the mass of igneous rock formed by this process.

Example

"Geologists mapped the granite intrusion that had pushed up through the older sedimentary layers."

Synonyms
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Antonyms
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• Rhymes for intrusion

• Nearby Words

introverted
intrude
intruder
intrusion
intrusive
intrusively
intrusiveness

Word Origin & Etymology

Borrowed in the late 14th century from Old French intrusion or Medieval Latin intrusio, derived from the Latin verb intrudere, meaning 'to thrust in' (from in- 'in' + trudere 'to thrust, push').

Cite this Entry

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