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inexplicable
inexplicit
inexpressible
inexpressive
inexpugnable
inexpungible
inextensible
inextinguishable
inextirpable
inextricable
INF
Inf.
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inertia

in·er·tia [ i núrshə ]


noun 
Definition:
 
1. apathy: inability or unwillingness to move or act

2. physics resistance to change: the property of a body by which it remains at rest or continues moving in a straight line unless acted upon by a directional force

[Early 18th century. < Latin, "lack of skill, inactivity" < inert- (see inert)]

in·er·tial adjective
in·er·tial·ly adverb
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