adjective, slip·pi·er, slip·pi·est.
Examples from the Web for slippy
Slippy McGee had been the greatest cracksman in all America.
Brash had been crook or cop who had taught or caught Slippy McGee!
As clouds began to spread out from the southwest he galloped into Slippy Bend.The Trail of Conflict|Emilie Baker Loring
And what can folks do when it rains this way and the roads so slippy?Maw's Vacation|Emerson Hough
It was darker now and there were stones and bits of wood on the strand and slippy seaweed.Ulysses|James Joyce