yan1
to inundate; to bury; to cover up; obscured; submerged

yin1
variant of 洇

strokes 12
radical
strokes after radical 9
湮没 湮沒 yan1 mo4
to bury; to submerge; to pass into oblivion; to obliterate; to annihilate (physics)

湮没无闻 湮沒無聞 yan1 mo4 wu2 wen2
to pass into oblivion

湮灭 湮滅 yin1 mie4
to destroy; to disappear; annihilation