/ Thesaurus / A Synonyms of astronomically Find synonyms for: Adverb1. astronomicallyusage: enormously; "the bill was astronomically high"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language