/ Dictionary / Index S sub rosa: Meaning and Definition of Find definitions for: sub ro•sa Pronunciation: (sub rō'zu), [key] confidentially; secretly; privately. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subrogate subround Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language