Trojan horse

proper noun

The hollow wooden horse by which the Greeks allegedly gained access to Troy during the Trojan War.

Meanings

Trojan horse1

proper nounthe Trojan horse

alternative Trojan Horse

  1. Greekhuman sciencesThe hollow wooden horse by which the Greeks allegedly gained access to Troy during the Trojan War.
nounTrojan horse (plural Trojan horses)

plural Trojan horses · alternative Trojan Horse

  1. figurativelyA subversive person or device placed within the ranks of the enemy.
  2. computer securityA malicious program that is disguised as legitimate software.

    Worse than what could be observed about the program was the fear that it might be a Trojan horse program -- apparently innocent, but carrying a string of code instructing the computer to carry out a specific damaging instruction at some later time.

    1991, Katie Hafner, John Markoff, Cyberpunk: Outlaws and Hackers on the Computer Frontier, revised edition, Simon and Schuster, →ISBN, pages 255–256

    Synonyms: Trojan

  3. businessA seemingly favorable offer designed to trick customers into making exorbitant payments.
  4. governmentA person, organization, social movement, piece of legislation, or ideology with a negative agenda or evil intentions under the guise of positive values or good intentions.

    [JD] Vance has said he suspects AI leaders of raising the alarm about safety risks as a “Trojan horse”.

    2026 September 16, Robert Booth, quoting JD Vance, “‘If you’re building Frankenstein, stop’: JD Vance dismisses calls for AI regulation”, in The Guardian, →ISSN
    4 more examples

    Russia thinks of an atomic authority as a Trojan horse to get behind the iron curtain and impair her defense, and there is some reason historically for this view.

    1946 October, John Foster Dulles, quotee, American Bar Association Journal, volume 32, number 10, page 681

    Seen like this, huge western companies function like a Trojan horse when they are invited inside the boundaries of LDCs.

    1995, Peter Saunders, Capitalism, Minneapolis: University of Minnesota Press, →ISBN, page 38

    Had the Israelis and the Americans realized that the Oslo accords were merely a “Trojan horse” designed to promote the higher goal of Palestine’s complete liberation, he argued, “they would never have opened their fortified gates and let it inside their walls.”

    2003, Efraim Karsh, Arafat's War, New York: Grove Press, →ISBN, page 64

    Indeed, it may turn out to be a Trojan horse that finally allows conservative ideologues, who have unsuccessfully laid siege to Medicare since the days of Barry Goldwater, to breach its political defenses.

    2003, Krugman, Paul R., The Great Unraveling: Losing Our Way in the New Century, W. W. Norton & Company, published 2004, →ISBN, page 449
verbTrojan horse (third-person singular simple present Trojan horses, present participle Trojan horsing, simple past and past participle Trojan horsed)

present singular third person Trojan horses · participle present Trojan horsing · participle past Trojan horsed · past Trojan horsed · alternative Trojan Horse

  1. alternativeAlternative form of Trojan-horse.

    But still, despite my initial shock at being expected to do a grownup job for my new grown-up salary, I was determined to keep the dream alive to some extent, by ticking a few of the sensible boxes while Trojan Horsing (yes, as a verb) some dot com fun in the back […]

    2008, Paul Carr, Bringing Nothing to the Party: True Confessions of a New Media Whore, Weidenfeld & Nicolson, →ISBN, page 88
    2 more examples

    You will disarm a group or person that holds simplistic attitudes—about relationships, education, financial success, morality, business ethics, religion, raising children—by giving that group or person Trojan Horsed instructions seemingly about how to do something mundane and unrelated.

    1999, Gary Hoffman, Glynis Hoffman, Adios, Strunk and White, 2nd edition, Huntington Beach, Calif.: Verve Press, →ISBN, page 180

    In its place arose a bilateral treaty that spelled out in basic terms that advances made in freedom of movement would be kept, under safeguards; free trade would be advanced bilaterally; goods imported from third countries would not be Trojan horsed; and countries would cooperate in areas of common interest.

    2009, Lee Rotherham, Ten Years On: Britain without the European Union, →ISBN, page 88

Trojan Horse2

proper nounthe Trojan Horse
  1. alternativeAlternative form of Trojan horse.

Synonyms & antonyms

nounA malicious program that is disguised as legitimate software.

Similar

More synonyms by meaning

nouna subversive group that supports the enemy and engages in espionage or sabotage; an enemy in your midst

nouna program that appears desirable but actually contains something harmful

Similar
Broader
malevolent program

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Ancient Greek τετραβάμων ἀπήνη, δούρειος ἵππος
  • τετραβάμων ἀπήνη (tetrabámōn apḗnē)epic wooden horse
  • δούρειος ἵππος (doúreios híppos)epic wooden horse
Arabic حِصَان طَرْوَادَة
  • حِصَان طَرْوَادَة (ḥiṣān ṭarwāda)epic wooden horse
Basque Troiako zaldia
  • Troiako zaldiaepic wooden horse
Bengali ট্রয়ের ঘোড়া
  • ট্রয়ের ঘোড়া (ṭroẏer ghōṛa)epic wooden horse
Catalan cavall de Troia, cavall de Troia
  • cavall de Troiaepic wooden horse
  • cavall de Troiacomputing: malicious program
  • troià informàticcomputing: malicious program
Chinese Mandarin 特洛伊木馬 /特洛伊木马, 特洛伊木馬 /特洛伊木马
  • 特洛伊木馬 /特洛伊木马 (Tèluòyī mùmǎ)epic wooden horse
  • 特洛伊木馬 /特洛伊木马 (Tèluòyī Mùmǎ)subversive person or device
  • 特洛伊木馬 /特洛伊木马 (Tèluòyī Mùmǎ)computing: malicious program
  • 木馬病毒 /木马病毒 (mùmǎ bìngdú)computing: malicious program
  • 木馬 /木马 (mùmǎ)computing: malicious program
Czech trojský kůň, Trójský kůň
  • trojský kůňepic wooden horse
  • Trójský kůňsubversive person or device
  • trojský kůňcomputing: malicious program
Danish trojansk hest, trojansk hest
  • trojansk hestepic wooden horse
  • trojansk hestsubversive person or device
  • trojansk hestcomputing: malicious program
  • trojanercomputing: malicious program
Dutch paard van Troje, Trojaans paard
  • paard van Trojeepic wooden horse
  • Trojaans paardepic wooden horse
  • Trojaans paardcomputing: malicious program
Esperanto troja ĉevalo, troja ĉevalo
  • troja ĉevaloepic wooden horse
  • troja ĉevalosubversive person or device
  • troja ĉevalocomputing: malicious program
Estonian Trooja hobune, Trooja hobune
  • Trooja hobuneepic wooden horse
  • Trooja hobunesubversive person or device
Finnish Troijan hevonen, Troijan puuhevonen
  • Troijan hevonenepic wooden horse
  • Troijan puuhevonenepic wooden horse
  • Troijan hevonensubversive person or device
  • Troijan hevonencomputing: malicious program
  • troijalainencomputing: malicious program
  • troijanhevonencomputing: malicious program
  • sisäänheittotarjousbusiness: seemingly favorable offer made to trick customers
  • Troijan hevonenpolitics: movement etc. with evil intentions
French cheval de Troie, cheval de Troie
  • cheval de Troieepic wooden horse
  • cheval de Troiesubversive person or device
  • cheval de Troiecomputing: malicious program
  • trojancomputing: malicious program
German Trojanisches Pferd, trojanisches Pferd
  • Trojanisches Pferdepic wooden horse
  • trojanisches Pferdsubversive person or device
  • Trojanercomputing: malicious program
Greek δούρειος ίππος, δούρειος ίππος
  • δούρειος ίππος (doúreios íppos)epic wooden horse
  • δούρειος ίππος (doúreios íppos)subversive person or device
  • δούρειος ίππος (doúreios íppos)computing: malicious program
Hebrew סוס טרויאני, סוס טרויאני
  • סוס טרויאני (sus troyáni)epic wooden horse
  • סוס טרויאני (sus troyáni)computing: malicious program
Hindi ट्रोजन हॉर्स
  • ट्रोजन हॉर्स (ṭrojan hŏrs)epic wooden horse
Hungarian trójai faló, trójai faló
  • trójai falóepic wooden horse
  • trójai falósubversive person or device
  • trójaicomputing: malicious program
Icelandic trójuhestur, trójuhestur
  • trójuhesturepic wooden horse
  • trójuhestursubversive person or device
  • trójuhesturcomputing: malicious program
Indonesian kuda troya, kuda troya
  • kuda troyaepic wooden horse
  • kuda troyacomputing: malicious program
Italian cavallo di Troia, cavallo di Troia
  • cavallo di Troiaepic wooden horse
  • cavallo di Troiasubversive person or device
  • cavallo di Troiacomputing: malicious program
  • trojancomputing: malicious program
Japanese トロイの木馬, トロイの木馬
  • トロイの木馬 (Toroi no mokuba)epic wooden horse
  • トロイの木馬 (toroi-no mokuba)computing: malicious program
Korean 트로이 목마, 트로이 목마
  • 트로이 목마 (teuroi mongma)epic wooden horse
  • 트로이 목마 (teuroi mongma)computing: malicious program
  • 트로이목마 (teuroimongma)computing: malicious program
Latin Equus Troianus, equus Troianus
  • Equus Troianusepic wooden horse
  • equus Troianuscomputing: malicious program
Latvian Trojas zirgs
  • Trojas zirgsepic wooden horse
Norwegian Bokmål den trojanske hest
  • den trojanske hestepic wooden horse
Persian اسب تروآ
  • اسب تروآepic wooden horse
Polish koń trojański, koń trojański
  • koń trojańskiepic wooden horse
  • koń trojańskisubversive person or device
  • koń trojańskicomputing: malicious program
  • trojancomputing: malicious program
  • koń trojańskibusiness: seemingly favorable offer made to trick customers
  • koń trojańskipolitics: movement etc. with evil intentions
Portuguese cavalo de Troia, cavalo de Troia
  • cavalo de Troiaepic wooden horse
  • cavalo de Troiasubversive person or device
  • cavalo de Troiacomputing: malicious program
  • trojancomputing: malicious program
Punjabi ਟ੍ਰੋਜਨ ਹਾਰਸ, ਲੱਕੜ ਦਾ ਘੋੜਾ
  • ਟ੍ਰੋਜਨ ਹਾਰਸ (ṭrojan hāras)epic wooden horse
  • ਲੱਕੜ ਦਾ ਘੋੜਾ (lakkaṛ dā ghoṛā)epic wooden horse
Romanian calul troian, cal troian
  • calul troianepic wooden horse
  • cal troiansubversive person or device
Russian троя́нский конь, Троя́нский ко́нь
  • троя́нский конь (trojánskij konʹ)epic wooden horse
  • Троя́нский ко́нь (Trojánskij kónʹ)subversive person or device
  • Тро́янский ко́нь (Trójanskij kónʹ)computing: malicious program
  • троя́н (troján)computing: malicious program
Spanish caballo de Troya, caballo troyano
  • caballo de Troyaepic wooden horse
  • caballo troyanoepic wooden horse
  • caballo de Troyasubversive person or device
  • troyanocomputing: malicious program
  • caballo de Troyacomputing: malicious program
Swedish trojan
  • trojancomputing: malicious program
Tagalog Kabayo ng Troya
  • Kabayo ng Troyaepic wooden horse
Tamil மரக்குதிரை
  • மரக்குதிரை (marakkutirai)epic wooden horse
Thai ม้าโทรจัน
  • ม้าโทรจันepic wooden horse
Turkish Truva atı
  • Truva atıepic wooden horse
Ukrainian троянський кінь
  • троянський кінь (trojansʹkyj kinʹ)epic wooden horse
Welsh ceffyl pren Troea
  • ceffyl pren Troeaepic wooden horse
Cite this entry
APA

Trojan horse. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Trojan%20horse

MLA

“Trojan horse.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Trojan%20horse. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Trojan horse,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Trojan%20horse.

Source: Trojan horse on Wiktionary, CC BY-SA 4.0.