湮灭

湮灭	yān miè	to sink into oblivion; to bury in obscurity
湮	yān	(literary) to sink into oblivion / (literary) to silt up / Taiwan pr. [yin1]
湮	yīn	variant of 洇
灭	miè	to extinguish or put out / to go out (of a fire etc) / to exterminate or wipe out / to drown