trojan horse: meaning, definition, pronunciation and examples

B2-C1
UK/ˈtrəʊdʒən hɔːs/US/ˈtroʊdʒən hɔːrs/

Formal, technical, literary

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Quick answer

What does “trojan horse” mean?

A large wooden horse used by the ancient Greeks to conceal soldiers and gain entry into the city of Troy, leading to its downfall.

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Pronunciation

Definition

Meaning and Definition

A large wooden horse used by the ancient Greeks to conceal soldiers and gain entry into the city of Troy, leading to its downfall.

Any person, group, or thing that appears harmless but is used to secretly undermine or attack from within, especially in contexts like cybersecurity, business, or politics.

Dialectal Variation

British vs American Usage

Differences

No significant lexical or pronunciation differences; both variants use the term similarly in written and spoken English.

Connotations

Similar connotations of deception, strategy, and hidden threat in both dialects.

Frequency

Equally common in UK and US English, particularly in academic, technical, and media contexts.

Grammar

How to Use “trojan horse” in a Sentence

a trojan horse for [purpose]to deploy a trojan horseas a trojan horse

Vocabulary

Collocations

strong
computer trojan horsepolitical trojan horsecyber trojan horse
medium
use a trojan horselike a trojan horseintroduce a trojan horse
weak
trojan horse attacktrojan horse strategytrojan horse scenario

Examples

Examples of “trojan horse” in a Sentence

verb

British English

  • They attempted to trojan horse the system during the audit.
  • He was accused of trojan horsing his way into the committee.

American English

  • Hackers tried to trojan horse the network to steal data.
  • She trojan horsed the application by embedding malicious code.

adjective

British English

  • The company faced a trojan horse attack on its servers.
  • We need to watch for trojan horse software in downloads.

American English

  • They discovered a Trojan horse program in the update.
  • The policy was a Trojan horse measure for stricter controls.

Usage

Meaning in Context

Business

Refers to a strategy, product, or employee that secretly works against an organization's interests, e.g., a competitor's product marketed as beneficial.

Academic

Used in history, literature, and computer science to describe deceptive infiltration or methodologies in research.

Everyday

Understood in metaphorical sense but less common in casual conversation; often invoked in discussions about trust or security.

Technical

In cybersecurity, a type of malware that disguises itself as legitimate software to gain unauthorized access or cause harm.

Vocabulary

Synonyms of “trojan horse”

Strong

subversive elementhidden threatfifth column

Neutral

deceptive deviceinsidious plancovert tactic

Vocabulary

Antonyms of “trojan horse”

transparent strategyhonest approachopen attackdirect method

Watch out

Common Mistakes When Using “trojan horse”

  • Using it to refer to any large object without deceptive intent.
  • Confusing it with other mythological terms like 'Pegasus' or 'Achilles' heel'.
  • Incorrectly capitalizing as 'Trojan Horse' in all contexts; standard usage varies by style.

FAQ

Frequently Asked Questions

No, it originated from Greek mythology and is used metaphorically in various contexts such as politics, business, and security to describe any deceptive infiltration.

In British English, it is pronounced as /ˈtrəʊdʒən hɔːs/.

It is rare and generally considered informal; in formal contexts, phrases like 'infiltrate deceitfully' are preferred.

A Trojan horse is malware that disguises itself as legitimate software to trick users, whereas a virus is a program that self-replicates and spreads by attaching to other files.

A large wooden horse used by the ancient Greeks to conceal soldiers and gain entry into the city of Troy, leading to its downfall.

Phrases

Idioms & Phrases

  • a trojan horse
  • to be a trojan horse in the camp

Learning

Memory Aids

Mnemonic

Think of the Trojan Horse story: a gift that hides soldiers inside, just like a computer program that looks safe but contains malware.

Conceptual Metaphor

DECEPTION IS A HIDDEN CONTAINER

Practice

Quiz

Fill in the gap
The software update contained a that allowed hackers to access private files.
Multiple Choice

What is the primary metaphorical meaning of 'Trojan horse'?