fixity

/ˈfɪksəti/
noun
  1. The quality of being fixed, stable, or unchanging.
    • She admired the fixity of his gaze as he concentrated on the painting.
    • The fixity of the ancient stone walls impressed the archaeologists.
    • The fixity of the rules made it difficult to adapt to new situations.
  2. The state of being firmly established or permanent.
    • There is a certain fixity in the traditions of the village.
    • The contract provided fixity of employment for the workers.
    • The fixity of the mountain range has been unchanged for millions of years.