Etymologically

Etymology and origin of the Latin word intrudo

Confidence
Established
Formation
Derivation
First attested
343–350 Firmicus Maternus
Ultimate origin
Latin trūdō
Etymology tree
inherited borrowed derived
Latin trūdō
Latin intrūdō
English intrude
From the same root
Latin abstrūdō ← trūdō
Latin contrūdō ← trūdō
Latin dētrūdō ← trūdō
Latin extrūdō ← trūdō
Latin prōtrūdō ← trūdō
English intruder ← intrūdō

Pronunciation

  • Classical: [ɪnˈtruː.doː][1]
  • Ecclesiastical: [inˈtruː.do][1]

Forms

intrūdō (present infinitive intrūdere, perfect active intrūsī, supine intrūsum); third conjugation[1]

Etymology

It is from Latin in- + trūdō (“to thrust, push”).[1][2][3] trūdō goes back to Proto-Italic *treude/o- and Proto-Indo-European *treud- (“to push, thrust”); de Vaan's cognates include Lithuanian triū̃sas (“work, effort, pains”) and Old Norse þrjóta (“to lack”).[4]

Earliest recorded meaning

Lewis & Short cite it from Cicero's speech for Caecina, but the TLL counts this as a false reading for intro dabat.[5][2] The first sure example is in Firmicus Maternus, where the moon puts some people in custody and thrusts others into prison.[2][6][7]

Semantic evolution

In Late Latin it meant to force in, to bring in by force,[2][6] as in a papal letter of Innocent I about Arsacius, whom the emperor had put into the episcopal see in place of John.[2] The French intrus and the Italian and Spanish intruso continue its participle.[2]

British Medieval Latin used it for thrusting into a place, above all into prison, and for driving a person into a state or action.[8] Medieval Latin in Hungary and the Czech lands used it for bringing someone, or oneself, into a church office unlawfully,[9][10] and English intrude first appears in the early 15th century in this ecclesiastical sense.[3]

Timeline

  • 343/350 AD – Firmicus Maternus writes of the moon thrusting people into prison.[2][6][7]
  • 1168 – John of Salisbury writes of those on whose advice Daniel had been thrust into the lions' den.[8]
  • early 15th century – English intrude appears, of taking a church living wrongfully.[3]

Meanings

Verb

  1. To thrust in, force in.[5][6][1]
  2. (Late Latin) To bring in by force, install by force.[2]
  3. (Medieval Latin) To thrust into prison.[8]
  4. (Medieval Latin) To drive a person into a state or action.[8]
  5. (Medieval Latin) To bring someone, or oneself, into a church office unlawfully; to intrude.[9][10]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  3. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b c d Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  7. ^ a b Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  8. ^ a b c d Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
  9. ^ a b Bartal, Antal, et al. (1987–), Lexicon Latinitatis Medii Aevi Hungariae, Budapest: Akadémiai Kiadó; online ed. ELTE
  10. ^ a b Latinitatis medii aevi lexicon Bohemorum / Slovník středověké latiny v českých zemích (1977–), Prague: Academia; electronic version, Institute of Philosophy of the Czech Academy of Sciences

Borrowed into

Descendants

Cite this entry

“Intrudo.” Etymologically, 7 Nov. 2026, etymologically.com/la/intrudo. Accessed 7 Nov. 2026.

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