1. 
[syn: audacious, daring, venturesome, venturous]
The Collaborative International Dictionary of English v.0.48:
Venturous \Ven"tur*ous\, a. [Aphetic form of OE. aventurous. See
   Adventurous, Venture, n.]
   Daring; bold; hardy; fearless; venturesome; adventurous; as,
   a venturous soldier. --Spenser.
   [1913 Webster]
         This said, he paused not, but with venturous arm
         He plucked, he tasted.                   --Milton.
   [1913 Webster] -- Ven"tur*ous*ly, adv. --
   Ven"tur*ous*ness, n.
   [1913 Webster]
WordNet (r) 3.0 (2006):
venturous
    adj 1: disposed to venture or take risks; "audacious visions of
           the total conquest of space"; "an audacious
           interpretation of two Jacobean dramas"; "the most daring
           of contemporary fiction writers"; "a venturesome
           investor"; "a venturous spirit" [syn: audacious,
           daring, venturesome, venturous]