| 词汇 | copacetic |
| 词根词缀 | 词源： 1919, but it may have origins in 19c. Amer.Eng. Southern black speech. Origin unknown, suspects include Latin, Yiddish (cf. Heb. kol b'seder), Italian, Louisiana French (coupe-sétique), and Native American. None is considered convincing by linguists. |
| 随便看 |
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。