List of slippery synonyms and slippery related words.
Machiavellian, Machiavellic, acute, adipose, ambidextrous, amoral, arch, artful, astute, blubbery, buttery, butyraceous, cagey, calculating, canny, changeable, chiseling, chrismal, chrismatory, clever, collusive, conscienceless, corrupt, corrupted, covinous, crafty, criminal, critical, crooked, cunning, cute, dangerous, dark, deceitful, deep, deep-laid, delicate, designing, desultory, devious, diplomatic, dishonest, dishonorable, disloyal, double, double-dealing, doubtful, dubious, elusive, elusory, evasive, faithless, false, falsehearted, fat, fatty, feline, felonious, finagling, fishy, foxy, fraudulent, furtive, glassy, greased, greasy, guileful, hazardous, icy, ill-got, ill-gotten, immoral, inconstant, indirect, infirm, ingenious, insecure, insidious, insubstantial, inventive, knowing, lardaceous, lardy, lubric, lubricated, lubricious, malingering, mucoid, not kosher, oiled, oily, oleaginous, oleic, on slippery ground, on thin ice, pawky, perfidious, perilous, politic, precarious, provisional, questionable, ready, reptilian, resourceful, rich, risky, rotten, scheming, sebaceous, serpentine, shady, shaky, shameless, sharp, shifting, shifty, shirking, shrewd, sinister, sleek, slick, sliddery, slimy, slipper, slippy, slithery, sly, smooth, snaky, sneaky, soaped, soapy, sophistical, stealthy, strategic, subtile, subtle, suety, supple, surreptitious, suspicious, tactical, tallowy, temporary, tentative, ticklish, touch-and-go, touchy, treacherous, trickish, tricksy, tricky, two-faced, uncertain, unconscienced, unconscientious, unconscionable, unctuous, undependable, underhand, underhanded, unethical, unfaithworthy, unguent, unguentary, unguentous, unprincipled, unreliable, unsavory, unscrupulous, unsolid, unsound, unstable, unsteadfast, unsteady, unstraightforward, unsubstantial, unsure, untrustworthy, variable, vulpine, wary, wily, without remorse, without shame