immovable

Short definition from Wiktionary

Adjective

1. 1
   incapable of being physically moved; fixed
2. 2
   steadfast in purpose or intention; unalterable, unyielding
3. 3
   not capable of being affected or moved in feeling; impassive
4. 4
   not liable to be removed; permanent in place or tenure; fixed

Noun

1. 1
   Something immovable.
2. 2
   Something immovable: Immovable objects or property, as land, buildings, etc.