in private

in private idiom
Not in public; secretly, confidentially. For example, The hearings will be conducted in private, or May I speak to you in private? [Late 1500s] For an antonym, see in public.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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