Is “Chasten” a Scrabble word?
Yes
CHASTEN
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 Chasten
/ˈtʃeɪ.sən/
verb
1.To punish (in order to bring about improvement in behavior, attitude, etc.); to restrain, moderate.
2.To make chaste; to purify.
3.To punish or reprimand for the sake of improvement; to discipline.