slippery

slippery /ˈslɪpəri/ adjective
slipperier; slipperiest
slippery
/ˈslɪpəri/
adjective
slipperier; slipperiest
Britannica Dictionary definition of SLIPPERY
[also more slippery; most slippery]
1 
: difficult to stand on, move on, or hold because of being smooth, wet, icy, etc.
2 
: not easy to understand or identify in an exact way
3 
informal : not able to be trusted : tricky

— slipperiness

noun [noncount]