shameless

From Middle English shameles, shamelees, schameles, schomeles, schomeleas, from Old English sċamlēas, sċeamlēas (“without shame; shameless”), from Proto-Germanic *skamalausaz (“shameless”), equivalent to shame +‎ -less. Cognate with West Frisian skamteleas (“shameless”), Dutch schaamteloos (“shameless”), German schamlos (“shameless”), Danish skamløs (“shameless”), Swedish skamlös (“shameless”), Icelandic skammlaus (“shameless; unashamed”).

shameless (comparative more shameless, superlative most shameless)

1. having no shame, no guilt nor remorse over something considered wrong; immodest; unable to feel disgrace

• shamelessly
• shamelessness