Noun inactiveness has 3 senses
  1. inaction, inactivity, inactiveness - the state of being inactive
    --1 is a kind of state
    Antonyms: action, activity, activeness
    --1 has particulars:
     abeyance, suspension; anergy; arrest, check, halt, hitch, stay, stop, stoppage; calcification; deep freeze; desuetude; dormancy, quiescence, quiescency; extinction; holding pattern; rest; stagnation, stagnancy, doldrums; stagnation, stagnancy; stasis
  2. inaction, inactiveness - a state of no activity
    --2 is a kind of motionlessness, stillness
  3. inactiveness, inactivity, inertia - a disposition to remain inactive or inert; "he had to overcome his inertia and get back to work"
    --3 is a kind of trait
    Antonyms: activeness, activity
    --3 has particulars:
     languor, lethargy, sluggishness, phlegm; restfulness; passivity, passiveness; indolence, laziness