滑る
すべる · suberu · JLPT N4 · verb-godan
to slide
⛸️🍌 suberu sounds like slipper-oo: your slipper slips and you slide
滑 = water radical 氵 + 骨 (bone): wet bones are slick, so things slide. The same kanji gives 滑らか (nameraka, smooth). Also used figuratively: 試験に滑る means to fail an exam, and a joke that falls flat is said to suberu.
滑 — water radical 氵 + bone 骨
A semantic-phonetic compound: 氵 (water) gives the meaning of slipperiness, while 骨 (bone) supplies the sound. The original sense was 'slippery,' as water makes surfaces hard to grip, and it later extended to 'smooth' and figuratively 'cunning' or 'sly.'