overactive

[ oh-ver-ak-tiv ]
/ ˌoʊ vərˈæk tɪv /

adjective

exceptionally or excessively active; too active.

Origin of overactive

First recorded in 1640–50; over- + active

OTHER WORDS FROM overactive

o·ver·ac·tiv·i·ty, o·ver·ac·tive·ness, noun

Example sentences from the Web for overactive

British Dictionary definitions for overactive

overactive
/ (ˌəʊvərˈæktɪv) /

adjective

inordinately active
(of the thyroid or adrenal gland, nervous system, etc) functioning at too high a capacity