over activity

overactive

[oh-ver-ak-tiv]
adjective
exceptionally or excessively active; too active.

Origin:
1640–50; over- + active

overactivity, overactiveness, noun
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World English Dictionary
overactive (ˌəʊvərˈæktɪv)
 
adj
1.  inordinately active
2.  (of the thyroid or adrenal gland, nervous system, etc) functioning at too high a capacity

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