shameless

adjective2

1. •
   Having no shame, no guilt nor remorse over something considered wrong; immodest, brazen; unable to feel disgrace.
2. •
   (no longer used) Not subject to other people’s shaming or reproach.

   • He shall be as now nameles, But he shall not be blameles, Nor he shall not be shameles; For sure he wrought amys, […] — 1503