IPA: //ˌhaɪpərkɪˈniːziə//
KK: /haɪpərkɪˈniːziə/
An unusual increase in movement or activity, often seen in children or as a medical condition.
The doctor diagnosed the child with hyperkinesia due to his constant fidgeting and inability to sit still.
Hyperkinesia is formed from "hyper-" (meaning over or excessive) and "kinesis" (from Greek "kinesis", meaning movement). The term describes a condition characterized by excessive movement or activity.
Think of 'hyper-' meaning excessive and 'kinesis' meaning movement — this helps you remember that hyperkinesia refers to excessive movement.