| 单词 | in vain | 
| 释义 | vainadjective   ˈvān  1   : having or showing undue or excessive pride in one's appearance or achievements : conceited   2   : marked by futility or ineffectualness : unsuccessful, useless  vain efforts to escape 3   : having no real value : idle, worthless  vain pretensions 4  archaic   : foolish, silly    vainly adverb   vainness   ˈvān-nəs noun in vain phraseas in futileproducing no results They did their best to fix the engine but their efforts were in vain. Synonyms & Similar Words Relevance 
 Antonyms & Near Antonyms 
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