constancy
noun /ˈkɒnstənsi/
/ˈkɑːnstənsi/
[uncountable] (formal)- the quality of staying the same and not changing
- the constancy of temperature inside the plane
- (approving) the quality of being faithful synonym fidelity
- He admired her courage and constancy.
Word Originlate 15th cent.: from Latin constantia, from constant- ‘standing firm’, from the verb constare, from con- ‘with’ + stare ‘stand’.