词根词缀：us-, ut-

【来源及含义】Latin: use, employ, practice

【同源单词】Ab abusu ad usum non valet consequentia, abuse, abuse, abuse, abusive, abusively

词根词缀：usur-

【来源及含义】Latin: loaning money at extremely high rates of interest; to use

【同源单词】usurer, usurious, usuriously, usuriousness, usury, usury laws