faithfulness
noun [ U ] uk/ˈfeɪθ.fəl.nəs/ us/ˈfeɪθ.fəl.nəs/
忠诚,忠实
the quality of being faithful to someone or something
The priest stressed the importance of faithfulness in marriage. 牧师强调了婚姻中忠诚的重要性。
Synonym: fidelity
Opposite: infidelity