inertia

noun

1. (countable, uncountable)The property of a body that resists any change to its uniform motion; equivalent to its mass.
2. (countable, figuratively, uncountable)In a person, unwillingness to take action.

   “Men […] have immense irresolution and inertia.”

   “Not all the surviving veteran chiefs would actually fight. Some remained nominally in the resistance but in practice delayed at their bases, pretexting a lack of ammunition for their uncertain inertia.”

   “City had been woeful, their anger at their own inertia summed up when Samir Nasri received a booking for dissent, and they did not have a shot on target until the 66th minute.”

3. (countable, uncountable)Lack of activity; sluggishness; said especially of the uterus, when, in labour, its contractions have nearly or wholly ceased.