震盪[shintou] shock
掃盪[soutou] cleaning up
盪ける[torokeru] to melt (to a liquid)
盪尽[toujin] squander

盪盪[toutou] vast
脳震盪[noushintou] cerebral concussion
眼球振盪[gankyuushintou] nystagmus (rapid involuntary eye movements)
盪す[torokasu] to melt (steel, etc.)

淫蕩[intou] dissipation
春風駘蕩[shunpuutaitou] warm and genial spring weather
震蕩[shintou] shock
掃蕩[soutou] cleaning up
放蕩[houtou] dissipation

遊蕩[yuutou] self-indulgent pleasure
蕩す[tarasu] to cajole
蕩ける[torokeru] to melt (to a liquid)
見蕩れる[mitoreru] to be fascinated (by)
蕩尽[toujin] squandering