unsuccessful 

  1. 形容詞
不成功的, 失敗的

    同義字詞
abortive,barren,bootless,empty,fruitless,futile,ineffective,ineffectual,inefficacious,otiose,profitless,unavailing,unproductive,unprofitable,useless,vain

例句

  1. The group was initially unsuccessful .
  2. Cloud cover makes the raids unsuccessful .
  3. It is unsuccessful for a number of reasons.
  4. Edie tries to apologize but is unsuccessful .
  5. In both instances, he returned unsuccessful .