Wiktionary
unmoveable
a. Not able to be moved; immobile.
Usage examples of "unmoveable".
What if she made him show what an unmoveable, hardheaded tyrant he really was?
There was something closed in Obi-Wan, something unmoveable, that he had never sensed in his apprentice before.
It was easier for Revenge to carry Rupert’s twelve stones than Jake plus two unmoveable stones of lead.
Even Robot, usually as unmoveable as a corpse, as unshakable as the manmade, soulless creation which had given him his nickname, blanched and managed to go another shade paler, if that was possible.