/ Thesaurus / A Synonyms of active immunity Find synonyms for: Noun1. active immunity, acquired immunityusage: a form of acquired immunity in which the body produces its own antibodies against disease-causing antigensWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language