/ Thesaurus / T Synonyms of tyrannus vociferans Find synonyms for: Noun1. Cassin's kingbird, Tyrannus vociferans, kingbird, Tyrannus tyrannususage: a kingbird seen in the southwestern United States; largely grey with a yellow abdomenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ravenous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language