潰
カイ, エ, つぶ.す, つぶ.れる, つい.える
crush, smash, break, dissipate
JLPT0 G7 S15 F5000
As per 貴# (compress) + 水 water → structure compressed in collapsing due to overflowing water (compare 濊) → *collapse*; *rout/be routed*; *crush* → *sore* (← inflammation bursting through the wall of an internal organ ← water bursting through a structure).
[Full Kanji Etymology List]