浪
làng · HSK 7
wave
🌊 氵 water + 良 (làng) phonetic = waves on water; 良 also lends the unrestrained sense
The water radical 氵 gives the meaning wave or breaker, while 良 supplies the làng sound. The unrestrained, dissipated sense comes from being tossed about like water with no fixed course, as in 浪费 squander.
浪 — water radical 氵 + 良 (good/phonetic)
浪 is a phono-semantic compound: 氵 (water) gives the meaning and 良 supplies the sound. It originally referred to waves on water, then extended figuratively to anything surging, unrestrained, or wandering — hence modern senses like 'wave,' 'wasteful,' or 'dissolute.'