Etymologically
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invasive

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Pronunciation

  • /ɪnˈveɪsɪv/, /-zɪv/[1]

Etymology

It is inherited from Middle English invasif (“offensive (of weapons)”),[2][1] borrowed from Middle French invasif,[3][4][5] or directly from Medieval Latin invāsīvus,[6][7][8] from Latin invāsus, the past participle of invādō (“to go into, attack, invade”),[6][4][5] from in- (“in”) and vādō (“to go, walk”).[6] It is related to invade and invasion.[5][8]

Earliest recorded meaning

Of weapons, used for attack, offensive: in 1447–48, in the papers of John Shillingford, mayor of Exeter, of swords and daggers drawn against the peace.[2] The OED's first record, of the nature of an invasion or attack, is from about 1520, in Barclay's translation of Sallust;[3] Etymonline dates the word to the mid-15th century.[6]

Semantic evolution

The early uses were military: Capgrave wrote of weapons both invasif and defensif, and Shakespeare of "arms invasive".[2][4] From 1597 the word described someone given to invading,[3] and since 1670 anything that intrudes on another's domain or rights.[3] Johnson (1755) defined it as entering hostilely on others' possessions, "not defensive".[9] The 20th century brought the technical senses that are now the commonest: in pathology, of a tumour or disease spreading into healthy tissue (1926);[3][4] in botany and ecology, of a plant or animal that spreads fast and displaces native species (1928);[3][4] and in medicine, of a procedure that breaks the skin or enters the body (1972).[3][10]

Timeline

  • 1447–48 – of weapons, offensive.[2]
  • c. 1520 – of the nature of an invasion or attack.[3]
  • 1597 – given to invading.[3]
  • 1670 – intrusive, encroaching.[3]
  • 1926 – in pathology, spreading into healthy tissue.[3]
  • 1928 – of a plant, spreading uncontrollably.[3]
  • 1972 – of a medical procedure, entering the body.[3]

Meanings

Adjective

  1. Of a plant or animal brought from elsewhere, tending to spread quickly and harm or displace native species: Volunteers spent the weekend clearing invasive vines from the riverbank.[4][3]
  2. Of a disease or tumour, spreading from its point of origin into healthy tissue.[10][4][3]
  3. Of a medical procedure, involving an incision or the insertion of an instrument into the body.[10][3]
  4. Intrusive; encroaching on another's privacy or rights.[3][10]
  5. Relating to or of the nature of an invasion; aggressive or offensive.[10][4][3]

Word family

  • invasively
  • invasiveness
  • noninvasive
  • uninvasive
  • preinvasive

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Kurath, Hans; Kuhn, Sherman M.; Lewis, Robert E., eds. (1952–2001), Middle English Dictionary, Ann Arbor: University of Michigan Press; online edition ed. Frances McSparran et al. (2000–2018)
  3. ^ a b c d e f g h i j k l m n o p q r Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  4. ^ a b c d e f g h Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  5. ^ a b c The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  6. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  8. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  9. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
  10. ^ a b c d e Collins English Dictionary (2023), Glasgow: HarperCollins