/ Thesaurus / S Synonyms of sky marshal Find synonyms for: Noun1. air marshal, sky marshal, marshal, marshallusage: a person trained by the government in hijacking and terrorist tactics who (for security reasons) is a passenger aboard an airline flightWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: kiln Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language