a person who has lost all sense of shame; a shameless person ❍ 只有～才说这种无耻的话，干这种无耻的勾当。Only a shameless person makes such shameless remarks and takes part in such shameless activities.
无耻之徒wú chǐ zhī tú
指不知羞耻的家伙。a shameless person, a person who has lost all sense of shame, cool beggar