the.com/slippery
the physics of losing your grip on the world, one careless step at a time
means Hard to hold, stand on, or pin down — because something is too smooth, wet, or evasive for a firm grip.
from From Old English 'slipor,' meaning slimy or smooth, built on a Germanic root that also gives us 'slip' and 'slip away' — a family of words all about surfaces that won't cooperate. The modern '-ery' ending was tacked on later, possibly nudged into shape by 'slippery'-sounding words; the related 'slipper' (the shoe you slide your foot into) shares the same slick ancestry.
banana mythBanana peels really are slick, but rarely the disaster comedy claims
ice secretIce isn't slippery itself; a thin liquid layer is
slang lifeMeans evasive, sneaky, hard to pin down
eel championEels coat themselves in mucus to escape grips entirely
friction foeSlipperiness is just friction giving up the fight