/ Thesaurus / R Synonyms of rubella panencephalitis Find synonyms for: Noun1. rubella panencephalitis, panencephalitisusage: a rare loss of mental and physical skills in adolescents; associated with the rubella virusWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language