/ Thesaurus / H Synonyms of henry david thoreau Find synonyms for: Noun1. Thoreau, Henry David Thoreauusage: United States writer and social critic (1817-1862)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: magnanimous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language