intruder in the dust

B2
UK/ɪnˈtruː.dər/US/ɪnˈtruː.dɚ/

Formal, Legal, Journalistic. Also used in everyday speech.

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Definition

Meaning

A person who enters a place without permission or welcome.

Any person or thing that enters or appears in a situation, system, or domain where they are not wanted, causing disruption or interference; can be used metaphorically.

Linguistics

Semantic Notes

Strongly implies violation of privacy, boundaries, or security. Can carry a sense of threat, unwelcome interference, or simply inappropriate presence.

Dialectal Variation

British vs American Usage

Differences

Minimal. Both use the term with identical meaning. Spelling is the same. Legal definitions in trespass or burglary contexts are highly similar.

Connotations

In both, the term connotes violation and unwelcomeness. In US media, may be more frequently associated with home invasion scenarios. In UK, can be used in contexts of digital/cyber intrusion with equal frequency.

Frequency

Similar frequency in both varieties. Slightly higher in US crime reporting.

Vocabulary

Collocations

strong
armed intruderunwanted intruderdetect an intruderkeep out intrudersintruder alarmintruder broke in
medium
potential intrudersuspected intruderfrighten off an intruderintruder enteredmasked intruder
weak
dangerous intrudernight intruderintruder leftchase an intruder

Grammar

Valency Patterns

[intruder] + [prepositional phrase: in/on/into + location][verb: detect/heard/spot/saw] + [determiner] + [intruder][intruder] + [verb: entered/broke in/fled]

Vocabulary

Synonyms

Strong

invaderburglarraider

Neutral

trespasserinterloper

Weak

gatecrasherunwelcome visitoroutsider

Vocabulary

Antonyms

guestinviteeresidentownerhost

Phrases

Idioms & Phrases

  • Like an intruder in the dust (rare, literary, implies something hidden but disruptive or shameful).

Usage

Context Usage

Business

Refers to a competitor entering a market illegally or unethically, or unauthorized access to data or premises.

Academic

Used in sociology, law, and security studies to discuss boundaries, privacy, and territorial violation.

Everyday

Most commonly used for someone breaking into a home or private property.

Technical

In computing/cybersecurity: a malicious actor who gains unauthorized access to a network or system.

Examples

By Part of Speech

verb

British English

  • To intrude is a serious offence.
  • I don't wish to intrude on your grief.

American English

  • He intruded into the meeting without an invite.
  • Sorry to intrude, but I need a signature.

adverb

British English

  • He glanced intrudingly at the private documents.
  • The comment was made intrudingly.

American English

  • She smiled not intrudingly, but warmly.
  • He stood there, looking around intrudingly.

adjective

British English

  • The intruding thoughts kept him awake.
  • They faced intruding questions from the press.

American English

  • The intruding vehicle blocked the driveway.
  • She resented the intruding noise from next door.

Examples

By CEFR Level

A2
  • The dog barked at the intruder.
  • An intruder was in the garden.
B1
  • The security light came on and scared the intruder away.
  • They installed cameras to deter potential intruders.
B2
  • The court considered the defendant a trespasser and an intruder on private land.
  • The new regulations were seen as an intruder into personal freedoms.
C1
  • The novel explores the psychological impact of the intruder on the family's sense of security.
  • In ecological terms, the introduced species acted as a disruptive intruder in the established ecosystem.

Learning

Memory Aids

Mnemonic

Think: IN + TRUDEr. Someone who TRUDES IN where they shouldn't (from Latin 'in' (in) + 'trudere' (to thrust)).

Conceptual Metaphor

PRIVACY/OWNERSHIP IS A PHYSICAL SPACE; VIOLATING PRIVACY IS TRESPASSING.

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

  • Do not confuse with 'нарушитель' in all contexts; 'нарушитель' is broader (e.g., нарушитель правил = rule-breaker). 'Intruder' is specifically about entering/being present. 'Вор' (thief) is not always correct unless theft occurs. Closest is 'злоумышленник, проникший внутрь' or 'незваный гость'.

Common Mistakes

  • Using 'invader' interchangeably (invader implies larger scale/military). Confusing 'intruder' (person) with 'intrusion' (act). Incorrect preposition: 'intruder at the house' (less common) vs. 'intruder in the house'.

Practice

Quiz

Fill in the gap
The silent alarm was triggered, alerting police to a possible in the building.
Multiple Choice

In which context is 'intruder' used metaphorically?

FAQ

Frequently Asked Questions

Not always in a strictly legal sense, but it always implies doing something unwelcome or without permission. A guest who overstays their welcome could be called an 'intruder' hyperbolically.

A burglar's primary intent is theft. An intruder's primary act is unauthorized entry; theft may or may not occur.

Yes, especially in wildlife or ecological contexts (e.g., 'An intruder cat entered the garden, frightening the birds').

The verb is 'to intrude'. It is often used with prepositions like 'on', 'upon', or 'into' (e.g., 'intrude on someone's privacy', 'intrude into a conversation').