slippery

adjective5

1. •
   Of a surface, having low friction, often due to being covered in a non-viscous liquid, and therefore hard to grip, hard to stand on without falling, etc.

   • Oily substances render things slippery.
2. •
   (figurative) Evasive; difficult to pin down.
3. •
   Unstable; changeable; inconstant.

   • He looking down With scorn or pity on the slippery state Of kings, will tread upon the neck of fate. — 1641
4. •
   (no longer used) Liable to slip; not standing firm.

   • Which when they fall, as being slippery standers, / The love that leaned on them, as slippery too, / Do one pluck down another, and together / Die in the fall. — 1602
5. •
   (no longer used) Wanton; unchaste; loose in morals.

   • My wife is slippery? If thou wilt confess – — 1610