VIGOROUS Synonyms: 207 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/vigorous
WEBSynonyms for VIGOROUS: energetic, robust, dynamic, lively, powerful, strong, healthy, lusty; Antonyms of VIGOROUS: sluggish, feeble, weak, dull, faint, lethargic, listless, torpid
DA: 75 PA: 85 MOZ Rank: 52