Unmovable (adjective)

1. Not capable of being moved or shifted.
2. Fixed in position or place; immovable.
3. Not easily swayed or influenced.

Origin:

Late 16th century, from un- + movable.

Examples:

1. The unmovable object was blocking the way.
2. The unmovable furniture was heavy and difficult to move.
3. The unmovable stand was firmly rooted in the ground.
4. The unmovable rock was a natural landmark.
5. The unmovable stance was a result of the strong conviction.