/ Thesaurus / N Synonyms of neil armstrong Find synonyms for: Noun1. Armstrong, Neil Armstrongusage: United States astronaut; the first man to set foot on the Moon (July 20, 1969) (1930-)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language