Is “Subcategorizing” a Scrabble word?
Yes
SUBCATEGORIZING
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 Subcategorizing
verb
1.To categorize more specifically by placing in a subcategory.
2.(grammar) To practice subcategorization.