Medical Dictionary

overactive

adj over·ac·tive \ˌō-və-ˈrak-tiv\

Definition of OVERACTIVE

:  excessively or abnormally active <an overactive mind> <overactive glands>
over·ac·tiv·i·ty \-ˌrak-ˈtiv-ət-ē\ noun, plural over·ac·tiv·i·ties
April 02, 2015
capricious Hear it
impulsive or unpredictable
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