Is “Hilly” a Scrabble word?
Yes
HILLY
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Hilly
/ˈhɪli/
adjective
1.(of a landscape) Abundant in hills; having many hills.