adventure **
escapade
risky venture
dangerous undertaking

"You're showing investors 10 to 15 percent return on their money at best for a very risky venture," she added.

A certain bent toward risky new ventures also seems to help.

B8 Network of private schools is a risky and revolutionary venture.

"Will they necessarily go along with such a risky venture?"

Only in the short term will even a popular President get the benefit of doubt on risky ventures.

That was Rip, about to set out on his risky venture.

But it is a risky venture for the Russian leader.

It seems that the dinner party has become a risky venture, for the host at least.

But starting a new business is a risky venture at any time, with anyone.

To pay the interest they wanted to go into risky ventures that might bring big returns.