con ‧ stan ‧ cy AC /ˈkɒnstənsi $ ˈkɑːn-/ BrE AmE noun [uncountable] formal
[ Word Family: noun : ↑ constant , ↑ constancy ; adverb : ↑ constantly ; adjective : ↑ constant ]
1 . the quality of staying the same even though other things change
constancy of
constancy of temperature
2 . loyalty and faithfulness to a particular person SYN devotion