SMOOTH Synonyms: 359 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/smooth
WebSynonyms for SMOOTH: sophisticated, graceful, civilized, polished, gracious, suave, urbane, attractive; Antonyms of SMOOTH: wooden, stiff, uncomfortable, green, uneasy, uncouth, awkward, clumsy
DA: 34 PA: 90 MOZ Rank: 61