to fail to live up (to expectations); unworthy (of trust); to let down; to betray (hopes); to disappoint
辜鸿铭辜鴻銘gu1 hong2 ming2
Ku Hung-ming or Gu Hongming (1857-1928), Malaysian man of letters, highly regarded for his literary works written mostly in English, and known for his monarchist views
辜振甫辜振甫gu1 zhen4 fu3
Koo Chen-fu (1917-2005), Taiwanese businessman and diplomat
滥杀无辜濫殺無辜lan4 sha1 wu2 gu1
willfully slaughter the innocent (idiom)
伤及无辜傷及無辜shang1 ji2 wu2 gu1
to harm the innocent (idiom)
死有余辜死有餘辜si3 you3 yu2 gu1
death cannot wipe out the crimes (idiom); dreadful crimes that rankled even after the perpetrator is dead