Answer:

BLUEST

Answer	Crossword Clue
BLUEST	Most melancholy
BLUEST	Superlatively down in the dumps
BLUEST	Least cheerful

BLUEST	Most down
BLUEST	Toni Morrison novel "The ... Eye"
BLUEST	Most azurean.
BLUEST	Most depressed
BLUEST	Saddest
BLUEST	Most azure
BLUEST	Most downhearted
BLUEST	Deepest azure

BLUEST	Least lighthearted
BLUEST	Most morose
BLUEST	Most sad
BLUEST	Down the most
BLUEST	Most bummed