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