/ Thesaurus / S Synonyms of space man Find synonyms for: Noun1. astronaut, spaceman, cosmonaut, traveler, travellerusage: a person trained to travel in a spacecraft; "the Russians called their astronauts cosmonauts"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language