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In secret; privately or confidentially: held the meeting sub rosa.
[Latin sub rosā, under the rose (from the practice of hanging a rose over a meeting as a symbol of confidentiality) : sub, under + rosā, ablative of rosa, rose.]
sub-ro′sa (səb-rō′zə) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
[Latin, literally: under the rose; from the rose that, in ancient times, was hung over the council table, as a token of secrecy]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
sub ro•sa(sʌb ˈroʊ zə)
confidentially; secretly; privately.
[1920–25; < Latin: literally, under the rose, from the ancient use of the rose at meetings as a symbol of the sworn confidence of the participants]
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|Adv.||1.||sub rosa - in secret or covertly; "held a meeting sub rosa to avoid general criticism"|
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.