loyalty的形容词是loyal。loyalty不作形容词。
例如：They had remained loyal to the president.
他们一直忠于总统。
Someone who is loyal remains firm in their friendship or support for a person or thing.
对别人忠诚的人坚定维护与别人的关系，支持别人。（对loyal的解释）
He went back to his loyal, long-suffering wife.
他回到了对他忠贞不渝、长期受苦的妻子身边。
