1 He sent me on a fool's errand .

2 It's a fool's errand trying to get Lena to join in anything.

3 Many believed this was a fool's errand.

4 I'm afraid you're going on a fool's errand.

5 It'seems that someone has sent you on a fool's errand, Colonel.

6 I went for an interview yesterday, but a fool's errand. The job had already been filled.

7 It was a fool's errand and there wasn 't any gold to be found.

8 Even in quiet times, predicting the paths of exchange rates is a fool's errand.