mourn
https://gyazo.com/7c9dd34a65f01e3600712ec272b24518
source: Fullmetal Alchemist GIF - Fullmetal Alchemist Death - Discover & Share GIFs
verb with object
feel or show deep sorrow or regret for (someone or their death), typically by following conventions such as the wearing of black clothes:
〈人の死など〉を悲しむ, 嘆く(grieve); 〈人〉の死を悼む, 〈死者〉を追悼する
e.g. Isabel mourned her husband
【死者を】追悼する; 【死者のために】喪に服する «for» ; 【人の死を】悲しむ, 嘆く «for, over»
e.g. no object : she had to mourn for her friends who died in the accident.
feel regret or sadness about (the loss or disappearance of something):
〈失われたことなど〉を悲しむ, 惜しむ
e.g. publishers mourned declining sales of hardback fiction.
ORIGIN
Old English murnan, of Germanic origin.