Breadcrumb Home > Thesaurus > O Synonyms of observation tower Find synonyms for: Noun1. lookout, observation tower, lookout station, observatory, structure, constructionusage: a structure commanding a wide view of its surroundingsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: unctuous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language