inertness
不活潑;緩慢;遲鈍
In·ert·ness, n.
1. Lack of activity or exertion; habitual indisposition to action or motion; sluggishness; apathy; insensibility.
Laziness and inertness of mind.
2. Absence of the power of self-motion; inertia.
◄ ►
inertness
n : immobility by virtue of being inert