adj.
Pronunciation: ' sli-p( ə -)r ē
Function: adjective
Inflected Form: slip · per · i · er ; -est
Etymology: alteration of Middle English slipper
Date: circa 1500
1 a : causing or tending to cause something to slide or fall < slippery roads> b : tending to slip from the grasp <a slippery fish>
2 a : not firmly fixed : UNSTABLE b : not precise or fixed in meaning : AMBIGUOUS , ELUSIVE
3 : not to be trusted : TRICKY
– slip · per · i · ness noun