constancy

/ˈkɑnstənsi/
noun
  1. The quality of being faithful and dependable, especially in a relationship.
    • He admired her constancy and loyalty over the years.
    • Her constancy as a friend made her someone everyone could rely on.
    • The couple's constancy through difficult times inspired their children.
  2. The quality of staying the same and not changing.
    • The constancy of the ocean tides is predictable.
    • The constancy of her daily routine helped her stay focused.
    • Scientists study the constancy of the speed of light.
Antonyms
What does "constancy" mean? | whatsthatwordmean | whatsthatwordmean