Is “Unbrace” a Scrabble word?
Yes
UNBRACE
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 Unbrace
/ʌnˈbɹeɪs/
verb
1.To undo, unfasten; to relax, loosen.