'Inactivity' definitions:

Definition of 'inactivity'

From: WordNet
noun
The state of being inactive [syn: inaction, inactivity, inactiveness] [ant: action, activeness, activity]
noun
A disposition to remain inactive or inert; "he had to overcome his inertia and get back to work" [syn: inactiveness, inactivity, inertia] [ant: activeness, activity]
noun
Being inactive; being less active [ant: activity]

Definition of 'Inactivity'

From: GCIDE
  • Inactivity \In`ac*tiv"i*ty\, n. [Cf. F. inactivit['e].] [1913 Webster]
  • 1. The state or quality of being inactive; inertness; as, the inactivity of matter. [1913 Webster]
  • 2. Idleness; habitual indisposition to action or exertion; lack of energy; sluggishness. [1913 Webster]
  • The gloomy inactivity of despair. --Cook. [1913 Webster]