/ Thesaurus / L Synonyms of lethargically Find synonyms for: Adverb1. lethargically, unenergeticallyusage: without energy; in a lethargic manner; "he hung around the house lethargically"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language