/ Thesaurus / R Synonyms of road agent Find synonyms for: Noun1. highjacker, highwayman, hijacker, road agent, holdup man, stickup manusage: a holdup man who stops a vehicle and steals from itWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language