chas ‧ ten /ˈtʃeɪs ə n/ BrE AmE verb [transitive usually passive] formal
[ Date: 1500-1600 ; Origin: chaste 'to chasten' (12-17 centuries) , from Old French chastier , from Latin castigare ; ⇨ ↑ castigate ]
to make someone realize that their behaviour was wrong or mistaken:
Party workers have returned to their home towns, chastened by their overwhelming defeat.
—chastening adjective :
a chastening experience