crackbrained

adj.

1. 疯狂而难以成功的
   crazy and unlikely to succeed
   1. a crackbrained idea
      异想天开的想法

1. Amine of ② King Kong: The mood is excited and depressed, angst, insomnia, crackbrained, disorder;
   金刚胺：情绪抑郁、焦虑、失眠、精神错乱、兴奋紊乱；

adj

1. insanely irresponsible
   1. an idiotic idea

   Synonym:    idiotic