hazardous, risky, wild -- (involving risk or danger; "skydiving is a hazardous sport"; "extremely risky going out in the tide and fog"; "a wild financial scheme")
bad, risky, high-risk, speculative -- (not financially safe or secure; "a bad investment"; "high risk investments"; "anything that promises to pay too much can't help being risky"; "speculative business enterprises")
(Sound)
