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

词根词缀：tard-

【来源及含义】Latin: slow; sluggish

【相关词根词缀】 Cross references directly, or partly, involving "slow, slowness, slow of, sluggish": dys-; lent-.

【同源单词】Ad vindictam tardus, aquitard, mental retardation, psychomotor retardation, psychosocial retardation, retard