When I introduced Aktively to artists as "an online marketplace for people..." people looked at me as if saying "what are you all about kiddo." So when I ordered my business cards today, I changed it to "a website for people..."
I hate jargon too, but I'd prefer to use the followings...
Pivot - Shift in strategy
Monetize - Start charging/selling
Minimum Viable Product - Beta product (this one is tough)
Leverage - Re-use
Root Cause Analysis - Finding source of problem