(formal)dare to do something (often used when politely asking a question or making a suggestion)
不顾唐突…，不揣冒昧…
what would he be calling for, &B{if I might make so bold} as to ask?.
我冒昧问一句，他会有什么样的要求呢?。
confident to the point of impudence
厚颜无耻，唐突，放肆
she marched into the library as bold as brass.
她非常无礼地大步走进图书馆。
a daring action or initiative
大胆的行动（或倡议）