A shot/stab in the dark

Pro Tip 1/3

Guesswork

Used when you rely on instinct without facts to support your choice.

Without any clues, my answer was just a shot in the dark.

Pro Tip 2/3

Informal

Common in casual conversation; may not be suitable for formal writing or speeches.

Picking a career can sometimes feel like a shot in the dark.

Pro Tip 3/3

No Expectations

Implies you don't really expect to be correct due to the randomness of your attempt.

I took a stab in the dark when choosing the name for our team.