The Collaborative International Dictionary of English v.0.48:
Venture \Ven"ture\, v. i. [imp. & p. p. Ventured; p. pr. & vb.
1. To hazard one's self; to have the courage or presumption
to do, undertake, or say something; to dare. --Bunyan.
2. To make a venture; to run a hazard or risk; to take the
Who freights a ship to venture on the seas. --J.
To venture at, or To venture on or To venture upon, to
dare to engage in; to attempt without any certainty of
success; as, it is rash to venture upon such a project.
"When I venture at the comic style." --Waller.