滋润
zī rùn · HSK 7
moist
💧 Both 滋 and 润 carry 氵 (the water radical) = water + water = thoroughly moist
滋 means to nourish or grow, 润 means smooth or moisten; stacked together they mean richly moistened. The 氵 on the left of each character is the three-drop water radical, a built-in clue that both halves are about wetness.
润 — water radical 氵 + run/king 闰
A semantic-phonetic compound: 氵 (water) gives the meaning, while 闰 (rùn) supplies the sound. The original sense was 'to moisten' or 'to soak,' which extended to 'glossy,' 'sleek,' and figuratively 'to enrich' or 'profit.'