Slippery \Slip"per*y\, a. [See Slipper, a.]

1. Having the quality opposite to adhesiveness; allowing or causing anything to slip or move smoothly, rapidly, and easily upon the surface; smooth; glib; as, oily substances render things slippery. [1913 Webster]

2. Not affording firm ground for confidence; as, a slippery promise. [1913 Webster]

The slippery tops of human state. --Cowley. [1913 Webster]

3. Not easily held; liable or apt to slip away. [1913 Webster]

The slippery god will try to loose his hold. --Dryden. [1913 Webster]

4. Liable to slip; not standing firm. --Shak. [1913 Webster]

5. Unstable; changeable; mutable; uncertain; inconstant; fickle. "The slippery state of kings." --Denham. [1913 Webster]

6. Uncertain in effect. --L'Estrange. [1913 Webster]

7. Wanton; unchaste; loose in morals. --Shak. [1913 Webster]

Slippery elm. (Bot.)
   (a) An American tree (Ulmus fulva) with a mucilagenous and slightly aromatic inner bark which is sometimes used medicinally; also, the inner bark itself.
   (b) A malvaceous shrub (Fremontia Californica); -- so called on the Pacific coast. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

186 Moby Thesaurus words for "slippery": 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

Source: Moby Thesaurus II by Grady Ward, 1.0
 

slippery adj
1: being such as to cause things to slip or slide; "slippery sidewalks"; "a slippery bar of soap"; "the streets are still slippy from the rain" [syn: slippy] [ant: nonslippery]
2: not to be trusted; "how extraordinarily slippery a liar the camera is"- James Agee; "they called Reagan the teflon president because mud never stuck to him" [syn: tricky, teflon]

Source: WordNet (r) 2.0
 

Slippery \Slip"per*y\, a. [See Slipper, a.]

1. Having the quality opposite to adhesiveness; allowing or causing anything to slip or move smoothly, rapidly, and easily upon the surface; smooth; glib; as, oily substances render things slippery.

2. Not affording firm ground for confidence; as, a slippery promise.

The slippery tops of human state. --Cowley.

3. Not easily held; liable or apt to slip away.

The slippery god will try to loose his hold. --Dryden.

4. Liable to slip; not standing firm. --Shak.

5. Unstable; changeable; mutable; uncertain; inconstant; fickle. ``The slippery state of kings.'' --Denham.

6. Uncertain in effect. --L'Estrange.

7. Wanton; unchaste; loose in morals. --Shak.

Slippery elm. (Bot.)
   (a) An American tree (Ulmus fulva) with a mucilagenous and slightly aromatic inner bark which is sometimes used medicinally; also, the inner bark itself.
   (b) A malvaceous shrub (Fremontia Californica); -- so called on the Pacific coast.

Source: Webster's Revised Unabridged Dictionary (1913)