Die out
I believe the answer is:
wane
(Other definitions for wane that I've seen before include "Decrease in size or power" , "Become smaller" , "Decline (in influence)" , "Appearing to decrease in size, the moon say" , "Decline or go down" .)
I believe the answer is:
wane
(Other definitions for wane that I've seen before include "Decrease in size or power" , "Become smaller" , "Decline (in influence)" , "Appearing to decrease in size, the moon say" , "Decline or go down" .)