英语词汇roil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	roil
词根词缀	词源： 1590, probably from M.Fr. rouiller "to rust, make muddy," from O.Fr. rouil "mud, rust," from V.L. robicula, from L. robigo* "rust" (see robust). M.E. roil meant "to roam or rove about."
随便看	permeable permeate Permian permission permissive permit permutation permute pernicious pernickety pernoctation peroration peroxide perpendicular perpetrate perpetrator perpetual perpetuate perpetuity perplex perplexed perplexity perquisite Perrier Pers.

英语词根词缀词典收录了31503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。