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in·va·sive

invasive

 
pronunciation:
ihn veI sihv
part of speech: adjective
definition 1: harmfully overspreading or penetrating, often quickly and aggressively.
an invasive species
definition 2: intruding; intrusive.
She was annoyed by the interviewer's invasive questioning.
definition 3: of a medical procedure, requiring cutting or insertion of an instrument into the body.
A transplant is an invasive procedure.
derivations: invasively (adv.), invasiveness (n.)