constancy
/ˈkɒnstənsɪ/noun
mass noun
1- the quality of being faithful and dependable忠诚, 忠实; 可靠。
1.1
- the quality of being enduring and unchanging坚定不移, 不屈不挠; 始终如一, 恒久不变：
the constancy of the tradition.
此传统的持久性。
词源
late 15th cent.: from Latin constantia, from constant- 'standing firm' （see CONSTANT）.