faithlessly
/'feɪθlɪslɪ/in a disloyal and faithless manner; "he behaved treacherously" "his wife played him false"
adverb [方式副词] 靠不住地;不忠实地
He faithlessly forsook his friends in their hour of need. 在最需要的时刻他背信弃义地抛弃朋友。
后缀: lessly
【adverb】 没有某种特性或质量 - without a particular quality or attribute
原词: faithlessly
是通过后缀 【lessly】 构成的派生词