slippery

(waterleft) + (bone)
★★☆☆☆
13 strokes
SOLO

Onyomi

KATSU but not really

Mnemonic

You slipped on the water puddle and broke your bones.

Kunyomi

す*べる to slip or pratfall
★★☆☆☆
す*べりやすい careful! It's slippery!
★★★☆☆

Jukugo

円滑(えんかつ)

effortless/smooth ☆☆☆☆☆
(yen/circle) + (slippery) = 円滑 (effortless/smooth)

smooth, as in trouble-free and effortless.