verb (used with object), in·trud·ed, in·trud·ing.

to thrust or bring in without invitation, permission, or welcome.
Geology. to thrust or force into.
to install (a cleric) in a church contrary to the wishes of its members.

verb (used without object), in·trud·ed, in·trud·ing.

to thrust oneself without permission or welcome: to intrude upon their privacy.

Origin of intrude

1525–35; < Latin intrūdere to push in, equivalent to in- in-2 + trūdere to push
Related formsin·trud·er, nounin·trud·ing·ly, adverbself-in·trud·er, nounun·in·trud·ed, adjectiveun·in·trud·ing, adjectiveun·in·trud·ing·ly, adverb

Synonyms for intrude Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for intruder

Contemporary Examples of intruder

Historical Examples of intruder

  • It was a pause in Janet's labors that gave the elder first warning of an intruder on his peace.

  • Without changing her position, she looked slowly around at the intruder.

  • His method was to drive straight at the intruder, and to sink his teeth in if he could.

    White Fang

    Jack London

  • Before he knew what he was doing, he had slashed the intruder twice and sprung clear.

    White Fang

    Jack London

  • I felt awkward, painfully the intruder into two other people's lives.

    The Harbor

    Ernest Poole

British Dictionary definitions for intruder



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



(often foll by into, on, or upon) to put forward or interpose (oneself, one's views, something) abruptly or without invitation
geology to force or thrust (rock material, esp molten magma) or (of rock material) to be thrust between solid rocks
Derived Formsintrudingly, adverb

Word Origin for intrude

C16: from Latin intrūdere to thrust in, from in- ² + trūdere to thrust
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

Word Origin and History for intruder

1530s, agent noun from intrude. Originally legal.



early 15c., back-formation from intrusion, or else from Latin intrudere "to thrust in" (see intrusion). Related: Intruded; intruding.

Online Etymology Dictionary, © 2010 Douglas Harper