faithfully名词是faithfulness。用法:faithfulness to sb意思是对某人的忠心;对某人的忠诚准确;精确;忠实。Faithfully是一个英文单词,副词。1、忠实地;如实地Their activities were faithfully described in the newspaper.他们的行动被如实地记载在报纸上。2、准确地I copied the map faithfully.我准确地复制了这张地图。