crush, smash, break, dissipate
潰 centers on forceful destruction that breaks something apart: crushing, smashing, or breaking into pieces. The dissipate sense extends this to things scattering or vanishing after being broken.
潰 combines 氵 (water) with 貴, which likely contributes the sound. The idea is water breaking through or destroying something, leading to meanings like crush or dissipate.
Water 氵 can be destructive, and 貴 suggests something valuable. Imagine a flood crushing and smashing a precious object, breaking it apart until it dissipates.
For カイ, picture a crushing wave that sounds like a loud 'kai!' as it smashes into a pier: kai -> カイ, and the wave breaks everything apart.
to smash; to crush; to flatten
collapse; ruin; destruction
to be crushed; to be squashed; to be smashed; to be destroyed; to be broken; to collapse
ulcer
to collapse (of a building, dream, plan, etc.); to be destroyed; to fall through; to break down
stomach ulcer; gastric ulcer
sand, ash, etc., thrown in the eyes to blind someone; throwing something at someone's eyes to blind them
good-for-nothing; parasite; deadbeat; loafer; drone; idler
very thorough search (for contraband, escaped convict, etc.); fine-tooth-comb search; exhaustive search; scouring
to mash; to grind; to pulverize; to pulverise; to deface
to smash (violently); to crush
stress ulcer
publicly predicting the future developments of a creative work (making it difficult for the creator to use those ideas)
popping bubble wrap (for fun, stress relief, etc.)
duodenal ulcer
half demolished
dissolution of a feudal clan by the shogunate and confiscation of its fief
to dissolve (an organization, company, etc.); to break up; to close down; to scrap (a plan, etc.)
to (hit and) crush; to smash; to squash
to chew up