"invasive" in the adjective sense

1. invasive

relating to a technique in which the body is entered by puncture or incision

2. invasive

marked by a tendency to spread especially into healthy tissue

"invasive cancer cells"

3. incursive, invading, invasive

involving invasion or aggressive attack

"invasive war"

4. encroaching, invasive, trespassing

gradually intrusive without right or permission

"we moved back from the encroaching tide"

"invasive tourists"

"trespassing hunters"

Source: WordNet® (An amazing lexical database of English)

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