1. causing or tending to cause things to slip or slide

- slippery sidewalks

- a slippery bar of soap

- the streets are still slippy from the rain

Similar word(s): lubricious, nonstick, slick, sliding, slimed, slimy, slipping, slithering, slithery, smooth, slippy

2. not to be trusted

- how extraordinarily slippery a liar the camera is

Similar word(s): untrustworthy, untrusty, tricky

Sentences with slippery as an adjective:

- Oily substances render things slippery.

- a slippery person

- a slippery promise