It’s a __ Slope, Things Are Bound to Go Wrong

Puzzle 18 of Alliteration Piece of Cake Pack

Question is: It’s a __ Slope, Things Are Bound to Go Wrong

and the answer is: SLIPPERY

Word Meaning:

SLIPPERY — 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.

Definitions from Wiktionary.

It's a __ slope, things are bound to go wrong Alliteration Answers | CodyCross Solutions