浮
fú · HSK 6
to float
🛟 氵(water) + 孚 (fú, to hatch/cover) — water that carries something on top
The 氵radical signals water; 孚 supplies the fú sound and originally depicted a hand over a child, hinting at something held up. Together: held up by water, i.e. to float. Extended sense: superficial, drifting, unstable.
浮 — water radical 氵 + 孚 (phonetic, 'hatch/trust')
浮 is a semantic-phonetic compound. The water radical 氵 gives the meaning 'water,' while 孚 supplies the sound and originally depicted a bird hatching an egg. Together they convey something resting on water, hence 'to float.'