unworthy  
adjective uk/ʌnˈwɜː.ði/ us/ʌnˈwɝː.ði/
  (not deserving)        
  不值得尊敬(敬仰或支持)的
not deserving respect, admiration, or support
  I put all unworthy thoughts out of my mind. 我把所有不好的念头放诸脑后。 
 unworthy of consideration, attention, etc.  不值得考虑/关注(等等)的
not deserving to be considered, given attention, etc.
  The theory was unworthy of serious attention. 这个理论不值得认真关注。 
   (not suitable)      
 formal不适宜的;不相称的 
not suitable for or characteristic of something
  a practice unworthy of a democracy  与民主不相称的行为