Is “Henceforth” a Scrabble word?
Yes
HENCEFORTH
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 Henceforth
/hɛnsˈfɔɹθ/
adverb
1.From now on; from this time on.
“I will try to do a better job, henceforth, now that I know the proper technique!”
Synonyms: from now on, henceforward, hereafter