词根词缀：-ative

【来源及含义】Latin: a suffix; tending to

【同源单词】acceleratory, accumulative, agglomerative, agglutinative, agitative, alterative

词根词缀：purg-

【来源及含义】Latin: clean, cleanse, purify

【同源单词】compurgation, expurgate, expurgated, expurgation, impure, pure