Dicey (adjective)

1. Involving risk or uncertainty.
2. Unpredictable or dangerous.
3. Uncertain or questionable in nature or outcome.

Origin:

From dice ("die"), originally referring to the uncertain outcome of a roll of a die.

Examples:

1. The stock market is a dicey investment.
2. The situation is dicey and it is hard to predict what will happen next.
3. The weather forecast for the weekend is dicey, it could rain or it could be sunny.
4. The company's financial situation is dicey and it is uncertain if they will be able to stay afloat.
5. The investment was a dicey one, it had a high risk but also a high potential reward.