The quality or state of being firmly fixed or attached; fixedness, stability. Now usually (of a colour or dye): the quality or state of not…

Firmness, solidity, stability. Also, moral firmness, firm allegiance, constancy.

Stability.

The quality or state of being firm, in the various senses of the adjective; firmness, solidity, stability, strength; stability of purpose, resolution.

In physical sense: Fixity in position. archaic.

The quality of being to a large extent unmoved or immovable; fixedness, stability.

Fixed condition, position, or attitude; fixedness, stability.

The quality of being firmly fixed or attached; stability, fixity.

The fact or condition of being fixed.