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Invasive
WordNet
adjective
(1) Gradually intrusive without right or permission
"We moved back from the encroaching tide"
"Invasive tourists"
"Trespassing hunters"
(2) Marked by a tendency to spread especially into healthy tissue
"Invasive cancer cells"
(3) Relating to a technique in which the body is entered by puncture or incision
(4) Involving invasion or aggressive attack
"Invasive war"