ㄍㄨㄒㄧˊㄧㄤˇyǎngㄐㄧㄢjiān

  1. 過分縱容助長壞人壞事清史稿·九五·》:一德二心招權納賄擅作威福欺罔豈能姑息養奸?」養虎遺患嚴懲不貸

to tolerate is to nurture an evildoer (idiom)​; spare the rod and spoil the child