资料来源 : Webster's Revised Unabridged Dictionary (1913)

Adventurousness \Ad*ven"tur*ous*ness\, n.
   The quality or state of being adventurous; daring;
   venturesomeness.

资料来源 : WordNet®

adventurousness
     n : the trait of being adventurous [syn: {venturesomeness}]