Steadfast or unsteady?

[longmarch]

The word 'rocky' has opposite meanings in its definition:
Steadfast,
unsteady;

so, when people say a rocky alliance, does it mean a solid alliance, or an unsteady one?

Thank you for your explanation!

[bhaisahab]

The word 'rocky' has opposite meanings in its definition:
Steadfast,
unsteady;

so, when people say a rocky alliance, does it mean a solid alliance, or an unsteady one?

Thank you for your explanation!

"A rocky alliance" is an unstable alliance. "A rock solid alliance" is stable.

[longmarch]

"A rocky alliance" is an unstable alliance. "A rock solid alliance" is stable.

Thank you so much bhaisahab!