conscienceless

1. The urgent task is to start with the study of four reasons& teachers, students, parents and society, to check the occurrence of this conscienceless and disgusting crime and punish these uncompetent teachers.
   当务之急是从教师、学生、家长、社会四方面的原因入手，遏制这种丧尽天良、枉为人师的恶性案件发生。

adj

1. lacking a conscience
   1. a conscienceless villain
   2. brash, unprincipled, and conscienceless
   3. an unconscionable liar

   Synonym:    unconscionable