/ Thesaurus / T Synonyms of type i allergic reaction Find synonyms for: Noun1. immediate allergy, atopy, atopic allergy, type I allergic reaction, allergy, allergic reactionusage: an allergic reaction that becomes apparent in a sensitized person only minutes after contactWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language