Bold or daring; someone or something that displays courage, audacity, or a readiness to take risks.
彼の大胆なアイデアが会社の成長につながった。
His bold idea led to the company's growth.
大胆な服装で舞台に立った彼女は注目を浴びた。
She attracted attention by appearing on stage in daring clothes.
大胆な判断が求められる場面だった。
It was a situation that required a bold decision.