staunchness

/stɔːntʃnəs/
noun
  1. The quality of being very loyal and committed to a person, group, or cause.
    • The dog's staunchness made him a perfect companion for the elderly woman.
    • Her staunchness to the team never wavered, even when they lost ten games in a row.
    • The senator was admired for his staunchness in defending the rights of his constituents.
  2. The quality of being strong, solid, and not easily damaged or broken.
    • Engineers tested the staunchness of the new material before using it in construction.
    • The staunchness of the oak table meant it could hold heavy books without wobbling.
    • The staunchness of the old stone bridge allowed it to survive the flood.