venturesomeness

Queen Emma, knowing her daughter's indefatigable venturesomeness, had given up accompanying her on her expeditions.

She was making a first voyage of discovery in her husband's deepest mind, and she was astonished at her own venturesomeness.

For a safe mediocrity is indeed praised, but a bold venturesomeness is also admired.

His maps were worthless, and clinging to experience, he showed none of his accustomed (p. 358) venturesomeness.

It was the expectation of the Boston shippers that his conservatism would serve as a check upon my rashness and venturesomeness.