audacious
adj. 无畏的;鲁莽的
例句
He was known for risky tactics that ranged from audacious to outrageous.
他以大胆甚至是骇人听闻的冒险战术而闻名。
《柯林斯英汉双解大词典》
It's the latest turn in the unwinding of one of the most audacious promises of the 20th century.
这是20世纪最大胆的承诺之一的最新转折。
You been into some other audacious mischief when I wasn't around, like enough.
我不在的时候,你说不定又干了些别的胆大妄为的淘气事。