Is “Thenceforward” a Scrabble word?
Yes
THENCEFORWARD
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 Thenceforward
adverb
1.From then on; from that time on
Synonyms: thenceforth, thenceforwards, thereafter