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Synonyms

intruder

British  
/ ɪnˈtruːdə /

noun

  1. a person who enters a building, grounds, etc, without permission

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

South Korean actor and K-pop singer Nana managed to fight off a home intruder alongside her mother, local media reported.

From BBC • Nov. 16, 2025

K-pop star Nana helped overpower a home intruder and is recovering in hospital after suffering injuries during the tussle, South Korean police said on Sunday.

From Barron's • Nov. 16, 2025

The adjuvant is a substance that activates the immune system to recognize the antigen, treat it as a foreign intruder and eliminate it.

From Science Daily • Oct. 13, 2025

Basque headstones are inscribed in Euskara, the oldest European tongue; Enriquez’s friend shouts in Euskara to scare away an intruder.

From Los Angeles Times • Sep. 30, 2025

The first intruder sat upon his chair, which he clutched on either side.

From "The Astonishing Life of Octavian Nothing, Traitor to the Nation, Volume II: The Kingdom on the Waves" by M.T. Anderson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.