1. Fastened together.
2. Associated in an exclusive sexual relationship; SYN. committed.
3. (Architecture) Used of buildings joined by common sidewalls.

ETYM Latin immobilis: cf. French immobile. Related to Immobility.
Not capable of movement or of being moved.

Not able or intended to be moved; SYN. immoveable, stabile, unmovable.

ETYM Latin inflexiblis: cf. French inflexible. Related to In- not, and Flexible.
1. Unbending; rigid, so as to resist change.
2. Incapable of adapting or changing to meet circumstances; SYN. rigid, unbending.
3. Extended meanings; incapable of change.

Impossible to remove or take away or dismiss

Not budging; resisting movement or change

So as to be incapable of moving.

In a steadfast manner; firmly.