1. 形容詞
   徒勞的
   無益的, 無效的
   徒勞無益的
   無用的, 無希望的
   不重要的, 微不足道的
   忙於小事的, 缺少目的的
   愚蠢的, 沒有出息的
   

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

例句

1. M : Oh, this is futile !
2. Invariably, the quest is futile .
3. Trying to explain this was futile .
4. It could have been a futile action.
5. The strategy is also largely futile .
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