词根词缀：-fute, -futable

【来源及含义】Latin: to strike down, to hit; to challenge; to prove wrong, to refuse, to reject

【同源单词】confutable, confutant, confutation, confutative, confute, confuter

词根词缀：re-, red-

【来源及含义】Latin: back, backward, again; used as a prefix

【同源单词】recalcitrant, recant, recapitulate, recapitulation, recede, receipt