U 開頭單詞
unsuccessfulness n.不成功；失敗
unsuccessfully adv.失敗地；無用
unsuccessful party [法學]敗訴方
unsuccessful adj.不成功的；失敗的
unsuccess n.不成功；失敗；無結(jié)果；徒勞
unsubtractedness n.無減除
unsubtle adj.不細致的；不敏銳的；不靈巧的
unsubstituted adj.未被取代的
unsubstantiated adj.未經(jīng)證實的，沒有事實根據(jù)的
unsubstantially adj.不實在的；脆弱的；缺乏事實根據(jù)的
unsubstantialize v.非物質(zhì)化；無形化=unsubstantialise（英）.
unsubstantiality n.不堅固(沒有實質(zhì))
unsubstantialise v.無形化；非物質(zhì)化=unsubstantialize(美).
unsubstantial adj.不實在的；脆弱的；缺乏事實根據(jù)的
unsubsidized adj.沒有補助的；不受津貼的