mindmap root((丢弃)) discard implies the letting go or throwing away of something that has become useless or superfluous though often not intrinsically valueless: ~ any clothes you are unlikely to wear again. cast especially when used with off, away, and out, implies a forceful rejection or repudiation: ~ off her friends when they grew tiresome. shed refers to the seasonal or periodic casting of natural parts, such as antlers, hair, skin, or leaves, and to the discarding of whatever has become burdensome or uncomfortable: ~ her tight shoes at the first opportunity. slough implies the shedding of tissue, as from a scar or wound, or the discarding of what has become objectionable or useless: finally ~ed off her air of jaded worldliness. scrap suggests a throwing away or breaking up as worthless but implies the possibility of salvage or further utility: all the old ideas of warfare had to be ~ped. junk is close to scrap but tends to stress finality in disposal: those who would ~ our entire educational system.