IPA: /ɪˈmuːvəblnəs/
KK: /ɪˈmuːvəblnəs/
The quality of being unable to be moved or changed; the state of being fixed in place.
The immovableness of the ancient monument has allowed it to withstand the test of time.
Immovableness → It is formed from "in-" (meaning not), "movere" (meaning to move), and "-able" (meaning capable of). The word describes a state of being not capable of being moved, hence immovableness refers to the quality of being unmovable or fixed.
Think of 'not' ('in-') being able to 'move' ('movere') — that's why immovableness means the quality of being unable to move.