/ Thesaurus / O Synonyms of organic brain syndrome Find synonyms for: Noun1. organic brain syndrome, mental abnormalityusage: mental abnormality resulting from disturbance of the structure or function of the brainWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language