Is “Subjoin” a Scrabble word?
Yes
SUBJOIN
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 Subjoin
noun
1.A subordinate or secondary join.
verb
1.To add something to the end; to append or annex
Synonyms: underjoin