slippery 3 antonyms and opposites of slippery. Adj — Having a smooth, low-friction surface that makes it easy to slide or fall. Synonyms for slippery glibbery glidder gliddery greasy lubric lubricious lubricous slabbery slape slick slidder sliddery slidey slidy slimy slithery slippery as an eel slippy Antonyms for slippery adhesive nonslippery nonslip ← Back to the full definition of slippery