behind closed doors

Idioms  

1. In secret, privately. For example, The nominating committee always meets behind closed doors, lest its deliberations become known prematurely. Also see behind the scenes.

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Example Sentences

The ATP Challenger Tour event in Fujairah, UAE is going ahead as planned this week, but operating with heightened security measures and taking place behind closed doors as a precautionary step.

From BBC

In a previous interview with Cosmopolitan, which marked their first as a couple, Culkin and Song revealed how their relationship was born behind the walls of their homes, blossoming behind closed doors away from prying eyes and paparazzi.

From MarketWatch

It is uncommon in Iran for potential candidates to be publicly identified in advance, and the process takes place behind closed doors.

From BBC

The sessions are held behind closed doors and voting is not made public, limiting outside scrutiny.

From BBC

The all-day hearing behind closed doors in New York featured the former president being asked about his inclusion in newly released files related to the financier, including in a photo with an unidentified person in a hot tub.

From BBC