difficult
adj.
c.1400, apparently a back-formation from difficulty. French has difficile, Latin difficilis. Of persons, "hard to please," from 1580s.
| 词汇 | difficult | 
| 词根词缀 | Online Etymology Dictionary difficult adj. c.1400, apparently a back-formation from difficulty. French has difficile, Latin difficilis. Of persons, "hard to please," from 1580s. | 
| 随便看 | 
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。