满足
mǎnzú · HSK 3
to satisfy; to meet (the needs of)
😌 满 = full + 足 = foot/enough → fully enough, satisfied
满 means full (water 氵 + 㒼 phonetic); 足 means foot but also enough/sufficient. Together: filled to sufficiency, i.e. satisfied or fulfilled. Same 足 appears in 足够 (enough).
满 — water 氵 + 㒼 (phonetic)
满 is a phono-semantic compound. The water radical 氵 gives the meaning, originally referring to a vessel filled to the brim with water, while 㒼 supplies the sound. From 'full of water' the sense broadened to 'full, filled, complete,' and later 'satisfied' or 'entirely.'
足 — top 口 (mouth/enclosure) + bottom 止 (foot)
Originally a pictograph of a leg and foot, with the upper square representing the knee or shin and the lower part 止 depicting the foot itself. It primarily means 'foot' and by extension 'sufficient' or 'enough,' a meaning shift likely from the idea of standing firmly or having a solid footing.