词根词缀：ruin-

【来源及含义】Latin: collapse; serious damage; destruction

【同源单词】ruin, ruination, ruinous, ruinously, ruinousness

词根词缀：rumin-, rumina-

【来源及含义】Latin: to chew over again, to chew the cud; to muse or to meditate; that is, to think about something in a deep and serious or dreamy and abstracted way or to think about something carefully, calmly, seriously, and for a long time

【同源单词】cud, obsessive rumination, rumen, rumenitis, ruminant, Ruminantia

词根词缀：rupt-, -rupting, -ruption

【来源及含义】Latin: break, tear, rend; burst

【相关词根词缀】 Related break, broken-word units: clast-; frag-.

【同源单词】abrupt, abrupt cessation, abruption, abruptly, abruptness, anticorruption

词根词缀：rust-, rus-, rura-, ruri-

【来源及含义】Latin: country, farm, land, open land; of the country, simple; live in the country

【同源单词】roister, roisterer, roisteringly, rural, ruralism, ruralist