Answer:

greyer

Answer	Crossword Clue
GREYER	Slatier in hue
GREYER	Aging, in Ontario
GREYER	Less cheery, in Chester

GREYER	More dismal, British style.
GREYER	More hoary
GREYER	More slate-colored to a Brit,
GREYER	Older, perhaps

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.