[1] : The Collaborative International Dictionary of English v.0.48

inactivity \in`activ"ity\, 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

[2] : WordNet (r) 2.0

inactivity
     n 1: the state of being inactive syn: inaction, inactiveness
          ant: action, action, action
     2: a disposition to remain inactive or inert; "he had to
        overcome his inertia and get back to work" syn: inactiveness,
         inertia ant: activeness
     3: being inactive; being less active ant: activity
see also:
inaction inactiveness action inertia activeness activity 

[3] : Moby Thesaurus II by Grady Ward, 1.0

84 moby thesaurus words for "inactivity":
   a wise passiveness, comfort, contemplation, contemplative life,
   deliberateness, deliberation, do-nothing policy, do-nothingism,
   do-nothingness, dolce far niente, dormancy, ease, fixation, fixity,
   hastelessness, hibernation, idleness, immobility, inaction,
   inactiveness, indolence, inertia, inertness, laissez-aller,
   laissez-faire, laissez-faireism, languidness, laziness,
   leisureliness, lethargy, lifelessness, listlessness, meditation,
   motionlessness, neutralism, neutrality, neutralness,
   noninvolvement, nonparticipation, nonresistance, nonviolence,
   nonviolent resistance, pacifism, paralysis, passive resistance,
   passive self-annihilation, passiveness, passivism, passivity,
   peace, peacefulness, placidity, placidness, policy,
   procrastination, quiescence, quiet, quietism, relaxation,
   relaxedness, repose, rest, restfulness, serenity, sleep, sloth,
   slothfulness, slowness, sluggishness, somnolence, stagnancy,
   stagnation, standpattism, stasis, stillness, torpor, tranquillity,
   unbuttoned ease, unhastiness, unhurriedness, vegetation,
   vita contemplativa, waiting game, watching and waiting

Inactivity >> I Words
Inactivity, definition of term: Inactivity
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