/ Thesaurus / S Synonyms of serum disease Find synonyms for: Noun1. serum sickness, serum disease, allergy, allergic reactionusage: a delayed allergic reaction to the injection of an antiserum caused by an antibody reaction to an antigen in the donor serumWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language