相关单词近义词 unrewarded 未获报答(或报偿、报酬、..., unsuccessful 不成功的, frustrated 失意的, defeated 动词defeat的过去式..., lacking 缺少的, wanting 不足的临近词empty, empty lot相似词empty into sth, empty nest syndrome, empty nester, empty set, empty-headed, EMS, EMT, emu, 返回 empty-handed