"Inertia" is a word in ENGLISH

Inertness; indisposition to motion, exertion, or action;
want of energy; sluggishness.

That property of matter by which it tends when at rest to
remain so, and when in motion to continue in motion, and in the same
straight line or direction, unless acted on by some external force; --
sometimes called vis inertiae.

Want of activity; sluggishness; -- said especially of the
uterus, when, in labor, its contractions have nearly or wholly ceased.