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® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
How to use in private in a sentence
To Alexandriafontein, a fenced-in private pleasure resort, an electric line runs, but it costs 25 cents to reach this park.Seven Legs Across the Seas | Samuel Murray