/ Thesaurus / R Synonyms of robert anson heinlein Find synonyms for: Noun1. Heinlein, Robert A. Heinlein, Robert Anson Heinleinusage: United States writer of science fiction (1907-1988)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: maritime Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language