in the dark

Idioms  

1. In secret, in concealment, as in This agreement was concluded in the dark . [Early 1600s]

2. In a state of ignorance, uninformed, as in I was in the dark about their plans . This metaphor often appears in the locution keep someone in the dark , meaning “deliberately keep someone uninformed,” as in They kept me in the dark about their plans . [Late 1600s] For an antonym, see in the know .

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Example Sentences

Photon rings are expected around true black holes but would not appear in the dark matter core model.

From Science Daily

The Sheffield-based business, which specialised in personal injury, wills and conveyancing, shut its doors on Monday, leaving clients and staff in the dark.

From BBC

"Ba, ba, ba," he practiced late at night, saying it quietly to himself in the dark.

From Literature

Mr. Munson was so proud of that thing, he washed and polished it every day till it glowed in the dark.

From Literature

That night Sadako watched her mother put a lantern outside so that the spirits could find their way in the dark.

From Literature