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invasive

Anything invasive goes or grows where you don’t want it. An invasive procedure at the doctor hurts, and an invasive plant, like kudzu, grows all over the garden. And the yard. And the house.

Invasive species are plants or animals that are not native to an environment and steadily spread, sometimes taking over the native landscape. The same could be said of diseases such as cancer. Invasive surgery usually involves making an incision with a scalpel. We call policies or laws invasive when they endanger personal or civil rights and liberties. No one likes an invasion. Raccoons are an invasive species in Scotland, but no one believed their fake accents anyway.

Definitions of invasive
  1. adjective
    gradually intrusive without right or permission
    invasive tourists”
    synonyms: encroaching, trespassing
    intrusive
    tending to intrude (especially upon privacy)
  2. adjective
    involving invasion or aggressive attack
    invasive war”
    synonyms: incursive, invading
    offensive
    for the purpose of attack rather than defense
  3. adjective
    (of plants or species) tending to spread in an uncontrollable and often harmful way
  4. adjective
    marked by a tendency to spread especially into healthy tissue
    invasive cancer cells”
    Synonyms:
    aggressive, fast-growing, strong-growing
    tending to spread quickly
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    Antonyms:
    confined
    not invading healthy tissue
  5. adjective
    relating to a technique in which the body is entered by puncture or incision
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    Antonyms:
    noninvasive
    relating to a technique that does not involve puncturing the skin or entering a body cavity
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