John is an adventurous man, unafraid of risks.

约翰是个喜欢冒险的人，不怕危险。

youdao

Unafraid of attack, they dared (to) run such risks.

敢于承担这样的风险。

youdao

As he has often demonstrated in business, Mr. Perkins was unafraid to take some risks in the design of his new penthouse.

WSJ: Tom Perkins's Penthouse Fit for King

Being a bit of a chameleon being unafraid to experiment or to take risks, or simply having a little fun with fashion is a personal brand in itself.

FORBES: From Bradley to Lena: Personal Branding on the Red Carpet