英语词汇effectiveness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	effectiveness
词根词缀	Online Etymology Dictionary effectiveness n. c.1600, from effective + -ness.
随便看	ephemeron Ephesians Ephesus ephialtes ephod ephor Ephraim epi- epic epicardium epicene epicenter irrigable irrigate irrigation irrita- irritability irritable irritant irritate irritation irrupt irruption irruptive IRS

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。