相关单词同义词unnecessary, spare, useless, waste, 近义词 unnecessary 不必要的, unwanted 不需要的, useless 无用的, unneeded 不需要的, pointless 无意义的, gratuitous 无缘无故的, unessential 非本质上的, supererogatory 职责以外的, redundant 多余的，过多的..., superfluous 多余的, dispensable 不是必要的, nonessential 非本质的, excess 超过, wordy 冗长的, extraneous 外来的, excessive 过分的, uncalled-for 不必要的, inessential 非必要的, uncalled for 不必要的, uncalled 不需要的, for 为反义词needful, 必需的临近词needs, needle, needlessly, needlessness, needless alarm, needless to say, needless bother, needless to add, needless distress, needless sacrifice, needless repetition, needless anxiety/suffering相似词needle case, needle exchange, needlecord, needlepoint, needless to say idiom, needlessly, needlework, needn't, 返回 needless