adjective. Active to an excessive or abnormal degree.

Too active; unnecessarily active.

adjective. Excessively active.

adjective. more active than normal

"Apparently, and I don't have this on good authority unless you call my overactive imagination "good authority", the site was being sued by the families of both Mighty Joe Young and Mighty Mouse over copyright infringement."

underactive  

active  

active  attractive  hyperactive  inactive  interactive  

adrenal  antidiuretic  authors'  differentiate  ductless  

hyperactive