Definition of slippery

• a. - 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.
• a. - Not affording firm ground for confidence; as, a slippery promise.
• a. - Not easily held; liable or apt to slip away.
• a. - Liable to slip; not standing firm.
• a. - Unstable; changeable; mutable; uncertain; inconstant; fickle.
• a. - Uncertain in effect.
• a. - Wanton; unchaste; loose in morals.