Is “Groundbreaking” a Scrabble word?
Yes
GROUNDBREAKING
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 Groundbreaking
/ˈɡɹaʊndbɹeɪkɪŋ/
noun
1.A ceremony to mark the beginning of construction.
2.The point at which construction begins.
adjective
1.Innovative; new, different; doing something that has never been done before.
“The latest model includes several groundbreaking features and improvements.”