ruthless [ˈru:θləs]

以下由轻松背单词网站提供

adj.无情的，冷酷的，残忍的，坚决彻底的

not thinking or worrying about any pain caused to others ; cruel

Fascists is the most ruthless enemy of the people. 法西斯是人民最残酷无情的敌人。
The ruthless enemy killed the old lady. 残忍的敌人杀害了那位老太太。