intruder - Master This Word
Master this word with our 5-step learning method – Learn English in English
intruder Word Meanings
- a person who enters a place without permission
- someone who breaches privacy
- a trespasser.
intruder Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
intruder Phonetic & Pronunciation
UK
/ɪnˈtruːdə/
US
/ɪnˈtruːdər/
intruder Word Etymology
in- = not + truder = to thrust, push → Latin 'intrudere' → Old French 'intruder' → English. Visualize someone pushing through a door they have no right to enter uninvited.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
An intruder is someone who slips into a space—physical or digital—without permission. In everyday language the term emphasizes an unwanted, unauthorized presence and a violation of boundaries. You might call a person who quietly slips through a locked door an intruder, or refer to a hacker who gains access to your computer as an intruder. The word carries a sense of threat or risk, but it does not automatically imply violence. It is common in security reports, news stories, and warnings. Typical verbs include enter, breach, invade, and trespass; adjectives like unauthorized and secretive often pair with it. Remember that intruder stresses the act of intrusion more than criminal intent.
Usage Reminders
- Know the core meaning of intruder as an unauthorized entrant
- Use with verbs like enter, breach, invade; avoid overgeneralizing to criminals only
- Pair with unauthorized or secretive for nuance
- In security contexts, intruder signals risk but not necessarily violence
- Distinguish intruder from trespasser and burglar depending on legal/ situational context
Common Misconceptions
- Intruder always means a violent criminal; it can also be a nonviolent unauthorised entrant.
- A trespasser is the same as an intruder in all legal contexts; in some places trespass is a civil violation, not a crime.
- Intruder = burglar; intruder covers more scenarios than burglary.
- It only refers to physical space, not digital intrusion.
- Intruder can describe a person who merely interrupts a conversation.
Thinking Differences
Explain intruder as an unauthorized, boundary-crossing presence; emphasize context (home, work, online) and negative connotation without overemphasizing violence.
Learning Tips
- memorize core meaning: unauthorized entrant
- contrast with trespasser and burglar
- practice with both physical and digital contexts
- use common collocations: intruder alert, intruder in the house
- note that violence is not a necessary element
- focus on the act of intrusion rather than the person’s identity
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the meaning of 'intruder'?
A.A person who is invited
B.A person who enters a place without permission
C.A person who is lost
D.A person who is confused
Step 2: Usage
In which sentence is 'intruder' used correctly?
A.The family welcomed the intruder into their home.
B.The intruder returned the lost wallet.
C.The intruder was a close friend of the homeowner.
D.The intruder knocked on the door and asked for help.
Step 3: Similar Words
Which word is a synonym of 'intruder'?
A.Guest
B.Host
C.Stranger
D.Ally
Step 4: Opposite Words
Which word is an antonym of 'intruder'?
A.Visitor
B.Trespasser
C.Interloper
D.Resident
Step 5: Mastery
In what situation would you use the word 'intruder'?
A.At a party welcoming a new guest
B.Discussing a person who is known to the homeowner
C.When describing someone who enters a home unlawfully
D.Talking about a close friend who visits unexpectedly
Related Listening
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