a leap in the dark
leap in the dark
A chance that one takes despite being uncertain of the consequences or outcome. I don't usually go on blind dates, but I took a leap in the dark and agreed to meet Sarah's friend for dinner.
a leap in the darkBRITISH
If you take a leap in the dark, you do something without knowing what the consequences will be. Voters have taken a leap in the dark by electing outsiders with little or no political experience. What I had before me wasn't a rational choice: it was a leap in the dark.