How to spell IVASIVE correctly?

One possible correct suggestion for the misspelling "ivasive" could be "elusive". "Elusive" refers to something that is difficult to catch or grasp, such as an elusive concept or an elusive target. It conveys the idea of being evasive or hard to pin down.

• evasive The congressman was being evasive during the interview, not wanting to give a straight answer.
• invasive The invasive species of plants are harming the ecosystem.

Intertubing

• antedating
• entertain
• entertainer
• entertaining
• inditing
• inner-tubing
• intertwine
• interurban
• intuiting
• undertaking