/ Thesaurus / S Synonyms of spacefaring Find synonyms for: Noun1. spaceflight, space travel, spacefaring, voyageusage: a voyage outside the Earth's atmosphereWordNet 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