Inertia Meaning

Hello sir I saw the inertia word in my book but I couldn’t understand the meaning of it so can you please tell me the meaning of this word ??

[Pathak]

Here is the Simple Definition of inertia-

Lack of movement or activity especially when movement or activity is wanted or needed

A feeling of not having the energy or desire that is needed to move, change, etc.

physics :- a property of matter by which something that is not moving remains still and something that is moving goes at the similar momentum and in the same direction until another thing or force affects it

Full Definition of inertia-

1 a : a property of matter by which it remains at rest or in uniform motion in the same instantly line unless acted upon by some external force

b : an analogous property of other physical quantities (as electricity)

2 : indisposition to motion, exertion, or change :

Examples of inertia

He blames governmental inertia for the holdup.

After 10 years in an unsatisfying job she overcame her inertia and went back to school.