IPA: //ˌsuːpərˈæktɪvɪti//
KK: /suːpərˈæktɪvɪti/
An extreme level of activity that goes beyond what is considered normal; often associated with hyperactivity.
The children displayed superactivity during the party, running around and playing non-stop.
Superactivity → It is formed from "super-" (meaning above or beyond) and "activity" (from Latin "activitas", meaning the state of being active). The word "superactivity" refers to a state of being more active than usual or beyond normal activity levels.
Think of being 'above' ('super-') normal 'activity' — that's why superactivity means being more active than usual.