Webster's Revised Unabridged Dictionary · 1913

Inactivity

Inactivity , noun

[Compare French inactivité.]

1.
The state or quality of being inactive; inertness; as, the inactivity of matter.
2.
Idleness; habitual indisposition to action or exertion; lack of energy; sluggishness.
The gloomy inactivity of despair. — Cook