/ Thesaurus / A Synonyms of assertiveness Find synonyms for: Noun1. assertiveness, self-assertiveness, positivity, positiveness, positivismusage: aggressive self-assurance; given to making bold assertionsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language