Guts and Shamelessness

Guts noun - Fortitude and determination.

Shamelessness and guts are semantically related In some cases you can use "Shamelessness" instead a noun "Guts".

Shamelessness noun - Behavior marked by a bold defiance of the proprieties and lack of shame.

Guts and shamelessness are semantically related in arrogance topic. Sometimes you can use "Guts" instead a noun "Shamelessness", if it concerns topics such as impudence.