Is “Hierarchical” a Scrabble word?
Yes
HIERARCHICAL
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 Hierarchical
/ˌhaɪəˈɹɑːkɪkəl/
adjective
1.Pertaining to a hierarchy.
2.Of or pertaining to an ecclesiastic or priestly order.
3.Classified or arranged according to various criteria into successive ranks or grades.
“It has been said that only a hierarchical society with a leisure class at the top can produce works of art.”