부끄러움을 느끼지 못하고 뻔뻔하거나 염치없는 태도로.
In a way that shows no sense of shame, embarrassment, or guilt, even when behavior is socially unacceptable or morally questionable.
예문:
"He shamelessly lied to his parents about where he had been all night."
"The singer shamelessly lip-synced during the entire live concert."
"They shamelessly exploited the legal loophole to avoid paying taxes."