英语词汇powerless的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

词汇	powerless
词根词缀	Online Etymology Dictionary powerless adj. early 15c., "lacking might or fortitude," from power, n. + -less. Related: Powerlessly; powerlessness.
随便看	knock- knocker knock off knockoff knockout knock up knoll knot knothead knothole knotty know- know knowable knowhow knowing knowingly knowledge knowledgeable known know-nothing knub knuckle knuckleball knucklehead

英语词根词缀词典收录了54763条英语词根词缀词条，基本涵盖了全部常用英语词汇的词根、词缀及词根记忆法解析，是记忆英语词汇的必备工具。