1gray (US) or chiefly Brit grey 
/ˈgreɪ/ adjective
gray·er; gray·est /ˈgreɪ/ adjective 1 : having a color between black and white : having a color that is like the color of smoke
▪ a gray sweater/suit ▪ gray hair 2 : having gray hair
▪ What will you do when you are old and gray? ▪ My friends have all gone gray. 3 : lacking brightness: such as a : cloudy and dark
▪ It was a gray winter day. ▪ a cold, gray dawn
b : very boring or ordinary
▪ leading a gray existence
c : having or showing little life or energy
▪ the gray faces of the people in the crowd
▪ a gray sweater/suit ▪ gray hair
▪ What will you do when you are old and gray? ▪ My friends have all gone gray.
▪ It was a gray winter day. ▪ a cold, gray dawn
b : very boring or ordinary
▪ leading a gray existence
c : having or showing little life or energy
▪ the gray faces of the people in the crowd
— gray·ness (US) or chiefly Brit grey·ness noun [noncount]
▪ the grayness of the dawn
▪ the grayness of the dawn
