shameless
adjective disapproving uk/ˈʃeɪm.ləs/ us/ˈʃeɪm.ləs/
无耻的，不要脸的
not ashamed, especially about something generally considered unacceptable
She is completely shameless about her ambition. 她对自己的野心全然不知羞耻。
They seem to have a shameless disregard for truth. 他们似乎恬不知耻地无视事实真相。
猥亵的，伤风败俗的
behaving in a way intended to attract sexual interest, without feeling ashamed about it
She's a shameless hussy. 她是个厚颜无耻的荡妇。