in public - Phrases/Idioms
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.
Openly, open to public view or access. For example, They've never appeared together in public. [c. 1450] For an antonym, see in private.