Etymologically

Etymology and origin of the Latin word intrusio

Confidence
Established
Formation
Derivation
First attested
1100s More words from the 11th century
Ultimate origin
Latin intrūdō
Etymology tree
inherited borrowed derived
Latin trūdō
Latin intrūdō
English intrude
Latin intrūsiō
English intrusion
From the same root
Latin abstrūdō ← trūdō
Latin contrūdō ← trūdō
Latin dētrūdō ← trūdō
Latin extrūdō ← trūdō
Latin prōtrūdō ← trūdō
English intruder ← intrūdō
English intrusive ← intrusion

Forms

intrūsiō f (genitive intrūsiōnis); third declension[1][2] Köbler also lists the spelling intrūcio.[1]

Etymology

It is a noun of action from Latin intrūdō (“to thrust in”).[1][2] The DMLBS treats it as Medieval Latin and compares Anglo-Norman intrusion and intrucion.[3]

Earliest recorded meaning

Latham dates it to the 12th century.[1] The first dated record in the DMLBS is from 1198, when an English court record amerces a man for unlawful entry into land.[3]

Semantic evolution

In England it was used of intruding into a church office, of usurping temporal power, and in law of unlawful entry into the possession of land, which gave its name to a writ.[3] Niermeyer gives intrusion, trespass and usurpation, and also imprisonment;[4] the MLW records carceris intrusio for putting someone into prison, injury in general, and in canon law the unlawful admission of someone to a church office.[5] Polish and Czech sources add the driving of cattle into a place and the sheathing of a sword,[2][6] and a Hungarian source has the literal act of thrusting in.[7]

Timeline

  • 12th century – Latham's first record.[1]
  • 1198 – An English court record uses it of unlawful entry into land.[3]
  • 1275 – A document from Trent uses carceris intrusio for imprisonment.[5]
  • 1387 – A Polish record notes two groats paid for driving in cattle.[2]

Meanings

Noun

  1. intrusion into a church office; unlawful appointment to one.[3][5][6]
  2. usurpation, trespass, encroachment.[4][3]
  3. (law) Unlawful entry into the possession of land; a writ or plea concerning it.[3]
  4. imprisonment, putting into prison.[4][5][2]
  5. The act of thrusting or driving in.[7][2][6]

References

  1. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  2. ^ a b c d e f Lexicon mediae et infimae Latinitatis Polonorum (1953–), Kraków: Instytut Języka Polskiego PAN; electronic ed. elexicon.scriptores.pl
  3. ^ a b c d e f g 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
  4. ^ a b c Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  5. ^ a b c d Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  6. ^ a b c 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
  7. ^ a b Bartal, Antal, et al. (1987–), Lexicon Latinitatis Medii Aevi Hungariae, Budapest: Akadémiai Kiadó; online ed. ELTE
Cite this entry

“Intrusio.” Etymologically, 7 Nov. 2026, etymologically.com/la/intrusio. Accessed 8 Nov. 2026.

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