Definitions

1. adjective

most likely to happen by chance; most uncertain or unpredictable

“She was hesitant to take the riskiest or chanciest job in the company.”

2. superlative adjective

most having or involving a chance; most uncertain or unpredictable

“The chanciest outcome is that we might win the lottery.”

3. noun

the most uncertain or unpredictable situation

“The chanciest situation we faced was during the war when we didn’t know what to expect.”