Intruder

/ɪnˈtruː.dər/

Meaning & Definition

noun
A person who enters a place or situation where they are unwelcome or unauthorized.
The homeowner called the police when she spotted an intruder in her backyard.
An unwelcome or uninvited guest.
They felt like an intruder at the party because they didn’t know anyone there.
A person or thing that intrudes, especially into a system or environment.
The scientists studied how invasive species can act as intruders in local ecosystems.
A person who interrupts others in conversation.
He was known as an intruder in discussions, often cutting people off without realizing it.

Etymology

From Latin 'intrudere', meaning 'to thrust in'.

Common Phrases and Expressions

home intruder
A person who illegally enters a home with the intent to commit a crime.
intruder alert
A system or signal indicating that an unauthorized person has entered an area.
intruder in the conversation
Someone who disrupts or enters a discussion uninvited.

Related Words

trespass
To enter someone's land or property without permission.
interlope
To interfere or meddle in someone else's affairs.
invade
To enter a place or situation where one is unwelcome or can cause harm.

Slang Meanings