A word that means you really agree, roots from mega and agree (meg-uh-gree)

Running for exercise and picking up trash you find along the way. It's good for the body, mind, soul, and environment! Started in Sweden but is making its way to the U. S.

When you agree with something just that much. Said at top volume, in a resinous Patrick Stweart-esque voice, head tilted to side, with emphatic thumbs up motion.