前缀：il-, in-, ir-, im-

【词根含义】：不,无,非;入,向内

【词根来源】：(il-用于l前;im-用于b, m, p前;ir-用于r前;in-用于其它情况)   来源于拉丁语in。

【同源单词】：illegal, illegality, illegitimate, illiterate, illogical

词根词缀：leg-, lex

【来源及含义】Latin: pertaining to the law, legal

【相关描述】From Latin legalis and lex, legis, law; lex is singular while leges is plural.

【同源单词】colleague, college, collegial, collegian, collegiate, delegate