词根词缀：de-

【来源及含义】Latin: from, away from, off; down; wholly, entirely, utterly, complete; reverse the action of, undo; the negation or reversal of the notion expressed in the primary or root word

【同源单词】de die in diem, de facto, De gustibus non est disputandum, de jure, De minimis non curat praetor, De mortuis nihil nisi bonum

词根词缀：vast-, wast-

【来源及含义】Latin: waste, lay waste completely; from vastare, "to make empty, to lay waste", from vastus, "empty, waste, desert"

【同源单词】consumptive waste, continuous waste, devast, devastate, devastating, devastation