expression, adverb
calmly; with composure; without fear; without a guilty look; with good grace
Describes acting in a relaxed, unashamed, or unflustered manner, often in situations where one might be expected to feel guilty, nervous, or embarrassed. The phrase is a fixed adverbial expression.
彼は失敗しても悪びれずに笑っていた。
Even after failing, he laughed calmly without looking guilty.
彼女は悪びれずに自分の意見を言った。
She stated her opinion with composure, without fear.