1. spreading harmfully into an area where it does not belong
Usage: often used in biology and ecology
2. involving entry into the body through the skin or body openings
Usage: medical
3. intruding on someone’s privacy or personal space

Examples

• Invasive species can damage local ecosystems.
• The invasive surgery required a long recovery time.
• Kudzu is an invasive plant that covers trees and buildings.
• The doctor recommended a less invasive treatment option.
• Some reporters ask invasive questions about celebrities’ private lives.
• Invasive weeds are choking out the native wildflowers.
• The invasive procedure carries more risks than the alternative.