in the dark

[in the dark] {adj. phr.} 1. In ignorance; without information.

John was in the dark about the job he was being sent to.

If thegovernment controls the news, it can keep people in the dark on anytopic it chooses.

Mary had a letter from Sue yesterday, but shewas left in the dark about Sue's plans to visit her.

Contrast: IN THEKNOW. See: WHISTLE IN THE DARK.