相关单词近義詞 unrewarded 未獲報答(或報償、報酧、..., unsuccessful 不成功的, frustrated 失意的, defeated 動詞defeat的過去式..., lacking 缺少的, wanting 不足的臨近詞empty, empty lot相似詞empty into sth, empty nest syndrome, empty nester, empty set, empty-headed, EMS, EMT, emu, 返回 empty-handed