Noun
The quality or state of being immovable; fixedness; steadfastness; as, immovability of a heavy body; immovability of purpose.
Source: Webster's dictionaryLove... is the immovability of truth. Jonathan Safran Foer
The young are often accused of exaggerating their troubles they do so, very often, in the hope of making some impression upon the inertia and the immovability of the selfish old. Robertson Davies