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.

(uncountable) The property of being slippery. / (countable) The result or product of being slippery.

plural of slipperiness

comparative form of slippery: more slippery

(figuratively) A chain of events that, once initiated, cannot be halted; especially one in which the final outcome is undesirable or precarious.

A mushroom in genus Suillus, family Boletaceae, especially Suillus luteus; boletes, they have no gills, but release spores from tubes ending in open pores.

(simile, colloquial) So slippery that it is almost impossible to hold. / (idiomatic, simile, colloquial) Very crafty or cunning.

(Australia) An item of play equipment that children can climb up and then slide down again.

plural of slippery dip

plural of slippery nipple