wild-goose chase

Hopeless errand undertaken

A wild-goose chase is a futile pursuit of something unattainable or nonexistent.

The phrase suggests wasted effort chasing something that can't be caught—like trying to catch a wild goose by running after it.

The tip sent detectives on a wild-goose chase across three states.

I spent hours looking for that file—turned out to be a complete wild-goose chase.

Related

futile · red herring · fool's gold · pointless · waste of time · spinning your wheels · tilting at windmills · barking up the wrong tree · beating a dead horse · fool's errand · folly · chasing rainbows · running in circles · exercise in futility · unproductive · go off into the weeds · ineffectual · tilt at windmills

Opposites
productivity/outcome

wild-goose chasesure thing

Guaranteed outcome or agreement

slam dunk · winning strategy · home run · jackpot · calculated risk

direction/purpose

wild-goose chasestraight shot

Direct unimpeded trajectory

clear path · direct route · beeline · direct approach · straight path

Family

wild, chase, goose, wildly, wilderness, wildlife, wildness, chaser, wildfire

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G