on a fool's errand(redirected from go on a fool's errand)
on a fool's errand
Trying to achieve, accomplish, or obtain something when one has little to no chance of being successful. You're on a fool's errand if you think you can convince the boss to give you more time off. We've been fighting with the city to give us the permit to build on this site for nearly a year now. It's starting to feel like we've been on a fool's errand this whole time.
*on a fool's errand
Fig. involved in a useless journey or task. (*Typically: be ~; go ~.) Bill went for an interview, but he was on a fool's errand. The job had already been filled. I was sent on a fool's errand to buy some flowers. I knew the shop would be closed by then.