From Longman Dictionary of Contemporary Englishin the darkin the darkinformalNOT KNOW knowing nothing about something important, because you have not been told about it We’re in the dark just as much as you are. College officials were kept in the dark about the investigation. → dark
Examples from the Corpus
in the dark• He had to run back in the dark and make safe the Lewes bomb.• A snippet of tape showing scattered flames in the dark ran over and over.• Mavis crossed the footbridge cautiously, listening in the dark for the river below.• I make up all the words myself, just like when I lived in the dark.• She was as much in the dark as Privet herself, and perhaps the others were the same.• He wants to keep Portsmouth in the dark until the teams line-up for the kick-off.• How could anybody tell in the dark? 