SLIPPERY Synonyms: 121 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/slippery
WEBSynonyms for SLIPPERY: shady, shifty, dark, slick, sneaky, treacherous, furtive, sly; Antonyms of SLIPPERY: straightforward, forthright, plain, open, direct, frank, candid, plainspoken
DA: 77 PA: 54 MOZ Rank: 19