thankless 

  1. 形容詞
(人)不感謝的, 不知感謝的/
不領情的/
忘恩的, 不知感恩的
(事物)吃力不討好的, 不受注重的

    同義字詞
unappreciative,ungrateful
unappreciated,ungrateful

  2. 名詞
a thankless task/
(複數)thankless tasks:
吃力不討好的事

    
                        
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例句

                

                    
    
                                                    
  1. 
                                Are we so base and thankless ?                            
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  2. 
                                Sometimes it's a thankless task.                            
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  3. 
                                You talk about a thankless task.                            
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  4. 
                                Teaching can be a thankless task.                            
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  5. 
                                Being a mayor is a thankless job.                            
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